§ 89-44. Street design.

Purpose: this section establishes street connectivity, layout and geometric design standards that -

•  implement PlanLafayette Action Items 1.3.2, 1.6.4, 2.11.1, 3.15.5, 6.4.2, 6.8.3, 10.2.1, and

•  protect the public health, safety and general welfare, and

•  promote the character of development provided in PlanLafayette and, if applicable, the zoning district, and

•  provide for the efficient movement of all modes of travel, including cars, pedestrians, bicycles, and transit.

•  Adhere to local, state, and federal engineering standards, policies, practices, and requirements for compliance and public safety.

(a)

Public streets.

(1)

General.

a.

The arrangement character, extent, width, grade and location of all streets shall —

1.

Conform to the Lafayette Transportation Plan, and

2.

Be considered in their relation to existing and planned streets, topographical conditions, public convenience and safety, and their appropriate relation to the proposed uses of the land to be served by the streets. Artificial channel relocation shall be minimal.

b.

The Lafayette Transportation Plan shall be adopted by ordinance after review and recommendation by the planning and zoning commission as part of its responsibility in Section 4-10 of the Lafayette City-Parish Charter. LCG staff, under the direction of the chief development officer and the director of PW, shall annually review, and if necessary suggest updates, to the Lafayette Transportation Plan.

c.

Where streets are not shown on the Lafayette Transportation Plan, the arrangement of streets in a subdivision shall:

1.

Provide for the continuation or appropriate projection of existing or proposed streets into surrounding areas where possible.

2.

Conform to any neighborhood or area plan for the neighborhood approved or adopted by the planning and zoning commission.

3.

Provide adequate street connections to adjacent properties to insure adequate traffic circulation within the general area.

d.

Public or private street layout within a subdivision shall provide access to all lots, or residential units, within the subdivision. Private streets may not be used to block connections to existing public right-of-ways or stub-out streets.

e.

New public streets shall be constructed with curb and gutter unless otherwise approved by PW based upon the results of the drainage impact study.

f.

The actual right-of-way varies based on the number of travel lanes and lane widths and the provision of other elements to support the type and density of adjoining land uses including parallel or angled on-street parking, buffer planting zones with landscape and streetscape materials, pedestrian zones and sidewalk widths, on-street bike facilities, and medians.

g.

Typical pavement section using minimum construction requirements is to be supported by sufficient geotechnical testing or design documentation to determine the section is suitable for the site specific or borrow material soil properties and anticipated traffic loading. The geotechnical testing used for design and construction testing/inspection results are to be submitted to PW at the time of completion of construction and the final inspection. The minimum pavement section shall be three inches asphaltic concrete wearing course, and eleven inches soil cement base or eight inches concrete (3,800 psi) and six inches properly prepared base.

h.

In those instances where a subdivision plat is located adjacent to an existing public street with a sub-standard right-of-way, sufficient additional right-of-way or setback shall be dedicated to accommodate the ultimate development of the subject street to a right-of-way width as required by the development standards.

i.

Public alleys are not permitted.

j.

Street lighting.

1.

Street lighting is required along all streets within a subdivision plat located in the City of Lafayette. Street lighting is not required along streets within a subdivision plat located in the Unincorporated areas of Lafayette Parish.

2.

Street lighting is required along all streets in a subdivision plat in accordance with PW and LUS Standards for Arterial Street Lighting, when applicable.

3.

Lighting along streets, including pedestrian scale lighting, shall be provided along all streetsrequired in the MX and PD districts along all streets that have sidewalks in accordance with PW and LUS Standards for arterial street lighting, when applicable.

4.

Lighting shall be shielded and directed downward in order to reduce glare.

(2)

Geometric design.

a.

Plan and profile sheets showing the roadway geometric design, drainage design and utility plans shall be designed by a Louisiana Registered Professional Engineer and submitted for review and approved by PW and LUS, when applicable, before any development improvement work begins.

b.

The minimum right-of-way, horizontal curves, gradients and miscellaneous widths for streets shall be as listed below for conventional street designs and for compact street designs.

c.

Design Standards. The table below describes the minimum facilities required for each roadway type and the minimum widths of those facilities. Note, additional facilities are permitted if they are in accordance with the standards.

Table 89-44-1 Street Design Minimum Standards ^a

R/W = right-of-way ft = feet mph = miles per hour N/A = not applicable Op = Optional	Arterial	Collector	Collector—Downtown	Local Road	Local Road Open Ditch c	Compact Road b	Private Streets	Private Alleys
Number of Traffic Lanes	4	2-4	2	2	2	2	2	2
Width of Traffic Lanes (ft)	11.5'-12'	10.5'-12'	12'	12'	11'	10'	11'	11'
Minimum R/W Width (ft)	102'	60'	70'	50'	60'	42'	N/A	N/A
Medians (min. width-ft)	21'	Op (13')	N/A	N/A	N/A	N/A	N/A	N/A
Sidewalk Width (ft; see subsection (e) for requirements)	5	5	5	5	5	5	Op	N/A
On Street Parking Lane	No	Op	Op	Op	No	Op	Op	No
Curb	Yes	Yes	Yes	Yes	No	Yes	Op	Op
Bike Facilities within street (min. width-ft)	Yes (4')	Op (4')	Op	Op	Op	Op	Op	No
Street Trees within R/W	Permitted in median	Op (7-20')	Yes (7-20')	Op (8')	Op (8' min)	Op (8')	Op (8')	Op (8')

 

^a Information shown on this table is the minimum required. Additional right-of-way will be required to accommodate additional facilities above the minimums. The minimum may not be acceptable for all developments.

^b Compact Roads are only allowed in the following districts: RS-2, RM, MN, PI and PD.

^c Open Ditch streets apply to the "A" zoning districts, conservation subdivisions or locations where curb and gutter requirement is determined to be hydraulically unfeasible by PW. A sub-surface system shall be extended as far as hydraulically feasible before an open ditch section is permitted.

[d.]

Curves and intersections.

1.

Subdivision plats, site plans and concept plans shall be arranged to allow the opening of future streets and logical future subdivision or development.

2.

Curves proposed for the right-of-way of designated major thoroughfares must have a minimum center line radius of 150 feet.

3.

Reverse curves shall be separated by a tangent distance of at least 100 feet.

4.

Intersections with other public streets shall be at right angles. Any variance shall not modify the angle of a major thoroughfare intersection more than five degrees. Where acute angle intersections are approved, a radius of at least 25 feet in the right-of-way line at the acute corner must be provided.

5.

Streets may intersect at a minimum 60-degree angle unless otherwise provided. If a street intersects at an acute angle, a minimum 25-foot radius is required at the edge of pavement.

(b)

Connectivity.

Purpose: Street layouts should respond to local conditions such as topography, watercourses, greenways and the existing street systems of neighboring developments. Local street patterns may discourage through traffic, but should also include interconnecting streets with alternative routes throughout the neighborhood to diffuse automobile traffic and shorten walking distances. A well connected street network shall be provided to spread traffic efficiently, and to provide greater opportunities for access and circulation of motor vehicle, pedestrian, and bicycle modes of travel.

(1)

Reserve strips that control access to streets are not permitted unless they are dedicated to or controlled by LCG, and approved by the planning and zoning commission. This does not apply to reserve strips where required for double frontage lots. (⇔ subsection 89-38(c)(10) )

(2)

Half streets are prohibited.

(3)

External connectivity.

a.

Parcels shall be arranged to allow the opening of future streets and logical further subdivision.

b.

Proposed streets shall be extended to the boundary lines of the tract to be subdivided or developed, unless prevented by topography or other physical conditions, or unless the City Engineer determines that the extension is not necessary or desirable for the coordination of the layout of the subdivision or development with the existing layout or is not the most advantageous future development of adjacent tracts.

c.

The external connection shall be provided by extending at least one street to the boundary line of the tract.

d.

The number of external connections shall be determined by one of the following:

1.

The property boundary length divided by twice the minimum block length (see section 89-38(d)(3)). In calculating this number, fractions are rounded down. Straight line approximations of the boundary length may be used if approved by the city engineer.

Example: A tract zoned "RM" has a common boundary of 1,000 feet with an adjacent tract. The minimum required block length is 200 feet. Two external connections are required (1,000 - (2 × 200)) = 1,000/400 = 2.5, rounded down to 2.

2.

For developments fronting streets designated as arterials or which have speed limits of 35 mph or greater, only one external connection to said street is permitted.

3.

A greater or lesser number of external connections may be allowed if a Traffic Impact Analysis establishes that varying from the requirements set forth above would not adversely impact the flow of traffic.

(4)

Internal connectivity.

a.

The following terms are defined for purposes of this subsection only:

Street Link	That portion of a Street that lies between 2 Nodes.
Node	The intersection two or more streets (vehicular street or pedestrian connection) or a vehicular dead end. The following are not considered Nodes:
	• An eyebrow. An eyebrow is a semicircular shaped portion of a street that is configured so that a portion of a circle with a radius of thirty (30) feet can fit within the confines of the paved portion of the surface.
	• The intersection of a Local street within the proposed subdivision with an external public street that connects to the proposed subdivision is not considered a node in computing the connectivity ratio.
	• The Terminus of a Local street that provides a stub for a future public street connection.
Pedestrian Connection	A sidewalk or similar pedestrian accessway or portion of a development's trail system that:
	• For sidewalks, complies with subsection (e). Trails and pedestrian accessways shall have a minimum width of 5 feet.
	• Connects a dead-end street, cul-de-sac, or T-intersection to another public street or to a commercial or office development that is built, approved or designated as part of the proposed development. Pedestrian accessways or trails that connect only to parks, greenways or recreational areas are not counted as a Pedestrian Connection for purposes of calculating the Connectivity Ratio.

 

b.

Streets within any proposed residential subdivision shall achieve a connectivity ratio as provided below. The connectivity ratio is computed by dividing the number of street links and pedestrian connections by the number of nodes within the subdivision.

c.

The administrator may count a feature as a street link or pedestrian connection or reduce the required ratio if:

1.

Existing topography or natural features make the required number of connections impractical, and

2.

The applicant provides alternative solutions that substantially accomplish the purposes of this section.

Table 89-44-2 Connectivity Ratio

	Area or Zoning District (see Article 2)	Connectivity Ratio (minimum)
1	Unzoned areas, "A" Agricultural, "RS" Single-Family Residential, "RM" Mixed Residential	1.2
2	Conservation Development, "CH" Commercial Heavy, "IL" Industrial Light, "IH" Heavy Industrial	Not applicable
3	"MN" Neighborhood Mixed Use, "MX" Mixed-Use Center, "D" Downtown, "PD" Planned Development	1.6
4	"CM" Commercial Mixed, "PI" Public/Institutional	1.4

 

(5)

Cul-de-sacs and dead-end streets.

1.

Dead-end streets are not allowed except in those instances where the street is terminated by a circular cul-de-sac turnaround or where the street is designed to be extended into adjacent property.

2.

The maximum length of dead-end streets (cul-de-sacs) is established in the table below. However, the planning and zoning commission may approve dead-end streets of a greater length when unusual conditions exist. The turnaround dimensions apply to a dead-end street over 150 feet from a through street intersection.

Table 89-44-3 Cul-de-Sacs and Dead-End Streets

Dead-End Streets		Turnaround
(Cul-de-Sacs)	Length (max-feet)	ROW Diameter	Pavement Diameter
Residential	750	100	70
Commercial	500	120	100
Industrial	500	120	100

 

3.

When there are plans for the future extension of a dead-end street, the closed end of the streets shall include a hard surface turnaround subject to the specifications of the department of PW.

(c)

Improvements proposed for public dedication.

(1)

The design and construction of public streets are not subject to direct regulation or control of the planning commission, but such matters do fall within the review and policies of the state and PW.

(2)

On all streets developed within LCG's jurisdiction, all grading, surfacing, drainage and sidewalk construction shall be done under the supervision of a licensed civil engineer with full time inspection who has obtained either LCG construction inspection certification or LA-DOTD certification in the area of work in which the inspection is being provided.

(3)

For all improvements offered for dedication, the developer's engineer shall certify to the completeness of the construction and that the construction was performed under the supervision of a full time quality control/quality assurance inspector, completed in accordance with the approved plans and LCG's specifications approved by LCG and all of the requirements set forth at provisions listed within subsections 89-58(e) and (f) and section 89-59. The testing laboratory shall be approved by PW.

(4)

All curbs, sidewalks, crosswalks and pedestrian ways intended for public dedication shall be designed and constructed in accordance with the Americans with Disabilities Act (ADA).

(5)

A development permit must be completed and adhered to for dedication and acceptance.

(d)

Private streets and private alleys.

(1)

General arrangement and layout. The pattern or layout of private streets in any project shall provide the following basic design concepts:

a.

Provide adequate vehicle access to buildings and facilities within the plat boundaries.

b.

Provide adequate interior traffic circulation and access to buildings by firefighting personnel and equipment and not induce a hazard to vehicular traffic and the occupants of the development as determined by PW.

c.

Provide adequate access to the existing public street system adjacent to the boundaries of the plat; however, private streets shall not be direct projections of any public street.

d.

The developer is responsible for private streets. The planning and zoning commission will designate these streets as such. All private streets and private alleys will be clearly marked and designated as private streets or private alleys on the preliminary and final plats.

e.

Minimum unobstructed private right-of-way width of 25 feet shall be required along all private streets except in the case of a private street being designated as a one-way street, in which event a minimum constructed private right-of-way width of 20 feet shall be required. If parallel parking is proposed along the private street, additional width may be required to accommodate the parking in question as determined by LCG.

f.

The assurance of pavement construction requirements will be under the jurisdiction PW review of construction standards.

g.

Typical pavement section.

(i)

For all subdivisions in unincorporated Lafayette Parish with more than 15 lots and all subdivisions in the City of Lafayette, pavement section shall meet the requirements of section 89-44(a)(1)(g).

(ii)

For subdivisions in unincorporated Lafayette Parish with 15 lots or fewer, pavement section shall meet the requirements of section 89-44(d)(1)(i).

(iii)

For subdivisions served by private roads in existence prior to the effective date of this chapter, or for which access is obtained through private rights-of-passage or other private access agreements recorded prior to December 7, 2015, pavement shall be of a strength sufficient to insure stable passage and adequate drainage, as determined by the department of public works. "As built" documentation demonstrating the stability of the pavement and adequacy of the drainage shall be submitted to the department of public works prior to recordation of the final plat, and shall be subject to approval by the department of public works.

h.

A private development may not block an existing or proposed public street extension.

i.

The minimum pavement or traffic lane width requirement shall be 20 feet. When the private street is designated as a one-way street, then the minimum pavement or traffic lane width requirement shall be 12 feet in the unincorporated areas and 15 feet in the city.

j.

Any single-family residential development within the unincorporated Parish of Lafayette composed of 15 proposed lots or fewer, or any apartment, condominium, planned unit development, or other attached housing, having fewer than 15 units and containing private streets, shall be serviced by a private street system with an aggregate or paved surface. The typical roadway section shall be a minimum four inches of aggregate (limestone or gravel) or two inches of asphaltic concrete placed over a base that is either ten percent lime treated soil ten inches thick or eight-inch soil cement.

k.

It shall be unlawful to develop property in phases or otherwise as a means of avoiding paving private street(s) in compliance with these regulations. For purposes of these regulations, all potential phases of a proposed development will be counted to determine the number of lots or units in any such development. No individual, directly or through the interposition of any legal entity, whether an individual, corporation, partnership, limited liability company, association, trust or other entity, shall be permitted to develop property by phases or any other means in an effort to avoid compliance with the requirement of paving private street(s) in accordance with these regulations or that would otherwise circumvent the intent of these regulations. No property contiguous to a development in which private street(s) are installed as permitted herein shall be developed by the same person either directly or through the interposition of any legal entity, whether an individual, corporation, partnership, limited liability company, association, trust or other entity for a period of two years after occupancy of the last unit occupied in the previously approved subdivision.

(2)

Private alleys.

a.

Private alleys may be provided within any subdivision to provide secondary vehicular access to buildings that have their primary access from an adjacent public street or private street.

b.

Private alleys cannot be used or designed to provide the principle access to property outside the subdivision plat boundaries in which the private alleys are located.

c.

Parallel parking is not allowed along a private alley. To maintain this restriction, the owner of the alley shall, at the developer's expense, conspicuously display signs prohibiting parking.

d.

Intersections of private streets shall be at right angles with variations not to exceed ten degrees.

e.

A driveway easement assuring permanent rear lot access for interior lots may be substituted for an alley.

(3)

Geometric design.

a.

Private streets (including private alleys) shall comply with the geometric design requirements in subsection 89-44(a)(2).

b.

Private streets may be established without a formal right-of-way if an unobstructed right-of-passage width equal to the right-of-way width required in subsection 89-44(a) is provided and constructed.

c.

Dead-ends, cul-de-sacs, and T-type turnarounds are allowed only in the unincorporated parish, and shall comply with subsection (b)(3) and Table 89-44-3.

(4)

Intersections.

a.

When a private street or private alley intersects with a public street there must be a minimum off-set distance of 125 feet from the center line of the private street or private alley to the center line of any adjacent street or alley intersecting the public street.

b.

Intersections of all private streets and private alleys with the public streets must be at right angles with variations not to exceed ten degrees and have 25 feet radii at all corners.

(5)

Connectivity.

a.

Private streets must comply with the connectivity standards in subsection (b) above.

b.

To provide adequate emergency vehicular access, the private street system shall provide at least two points of access to the project or development from the public streets adjacent to the boundaries of the project or development.

(6)

Fire protection.

a.

All buildings proposed to be constructed within any project containing private streets must be so arranged and located that the firefighting apparatus can park and reach any part of any building with a 200-foot long hose extending from the apparatus. The 200-foot hose length must be measured as the hose is laid on the ground and may not be measured as the aerial radius from the parked apparatus.

b.

Fire hydrants, where required, must be so located and provided within the project boundaries that 300 feet of fire hose, extending on the ground from the hydrant, can reach the furthermost part of any building within the boundaries of the plat.

c.

All buildings proposed to be constructed within any project containing private streets and which contain residential dwelling units and have an overall length of 300 feet or more, must be so designed to have at least one open, unobstructed walkway through the building at ground level. The walkway must have a width of at least five feet to allow ready access by fire and police and their equipment and other emergency services to each side of such buildings. Where buildings are to be constructed over and across any private street, the unobstructed overhead clearance must be at least 14 feet when measured between the highest point of the private street paving under the structure and the lowest part of the building structure or associated parts of the building. Suitable restrictions to this condition must be noted on the plat.

(7)

Maintenance of private streets and private alleys.

a.

LCG is not responsible for maintaining any private streets, signs or drainage improvements on the private street(s).

b.

The developer will cause to be created (or furnish a certified correct copy if already in existence) a financial and management legal entity or entities that will guarantee and assure the maintenance of all private streets and private alleys constructed.

c.

The developer will provide a certification to the administrator from an attorney licensed to practice law in the State of Louisiana that the documentation attached to the certification provides for the creation of an entity that is responsible for maintaining the private streets, private roads and/or private alleys in the subdivision. The certification must be provided prior to obtaining final subdivision approval. The certification shall contain the name of the entity responsible for maintenance and its registered office.

(8)

Drainage of private streets and private alleys. New private streets, private alleys and private drainage systems shall conform to the applicable requirements of subsections 89-42(a)—(g) with respect to the design and construction of the sub-surface/open ditch roadway drainage system and private drainage outfall.

(e)

Sidewalks.

(1)

Sidewalks are required where indicated in the geometric design standards (see subsection (a)(2)). Sidewalks shall be a minimum of five feet when separated from the roadway by a four-foot open area. When sidewalks are adjacent to the roadway (curb) the sidewalk minimum width is six feet.

(2)

The applicant for subdivision plat approval shall construct all sidewalks on the property.

(3)

The sidewalks shall be constructed at the time of final plat recordation. The acceptance of a letter of credit in lieu of the construction of sidewalks is allowed according to section 89-35 "Improvement Guarantees." The amount of the letter of credit must be approved by PW.

(4)

Development fronting on state highways.

a.

The developer must construct sidewalks either in state highway right-of-way or in a sidewalk easement on the development property.

b.

If the applicant intends to construct the sidewalk in the state right-of-way —

1.

The applicant shall request approval from the local state highway office on the appropriate form during the platting process.

2.

If the state highway department approves the application, the sidewalks will be shown on the preliminary plat as approved by the DOTD and a copy of the DOTD permit submitted to PW prior to final plat approval.

3.

If the state highway department denies the application, the developer will designate a minimum 5-foot-wide sidewalk easement adjacent to the state right-of-way line on development property on the preliminary plat.

4.

The sidewalk easement can be located within the utility easement.

(5)

Development fronting city/parish streets.

a.

The developer must construct sidewalks either in public street right-of-way or in a sidewalk easement on the development property.

b.

Sidewalks built in the public street right-of-way shall be constructed so that the development side edge of the sidewalk is one foot within the right-of-way line and the five-foot sidewalk width is in public right-of-way.

c.

If street right-of-way width, trees, utilities, topography, existing ditches, or similar existing obstructions prevent the construction of sidewalks in public right-of-way, the sidewalk will be constructed in a sidewalk easement designated on the preliminary plat. The sidewalk easement can be located within the utility easement. If the conflict is discovered after final plat recordation, an Act of Correction must be completed and recorded with the revised sidewalk easement shown.

(6)

Maintenance. If sidewalks are constructed according to LCG standards in the designated sidewalk easement, LCG will assume perpetual maintenance of these sidewalks.

(7)

Design.

a.

Sidewalks shall be constructed according to LCG's Specifications for Roads, Drainage, Bridges, and Other Infrastructure Improvements.

b.

Sidewalks shall avoid obstacles such as ditches, trees, and utilities.

c.

Sidewalks across driveways or that will be crossed by vehicles will be at least 6 inches thick or as thick as the driveway, whichever thickness is greater.

d.

The sidewalk will be continuous over the full frontage of the development.

e.

At street corners the sidewalk in both directions will extend to the pavement edge. If a ditch culvert is required to accomplish this, it will be considered part of the sidewalk requirement. The size and grade of culverts will be determined by the development engineer and approved by PW.

f.

Sidewalks along "A" and "B" streets in the MX and D zones ("A" and "B" streets are as defined in the development's plan), shall be divided into frontage zones, pedestrian through zones and furnishing zones as follows:

Table 89-44-4 Frontage Zones

	"A" Streets/Main Street	"B" Streets
	Figure 89-44-1	Figure 89-44-2
Pedestrian Through Zone (minimum-feet)	8 feet	5 feet
Planting/Furniture Zone (minimum-feet)	5 feet	5 feet

 

(f)

Line of sight.

(1)

Applicability.

a.

This subsection applies to existing obstructions predating adoption of this ordinance and new construction of fences or signs or placement of movable objects, and new planting of hedges, bushes or other plants.

b.

Utility structures, traffic and street signs, where necessary as determined by the Administrator, and buildings existing at the time of adoption of this ordinance are exempt from this subsection.

c.

This subsection becomes enforceable upon application for building permit.

d.

This subsection shall apply to properties located at the intersection of a public street, the intersection of a public street with a private street, and as otherwise provided herein.

(2)

It is unlawful to construct or maintain, or permit to remain, any fence, sign, movable object, hedges, bushes or other plants which exceed 36 inches in height measured from the street level on any lot where the fence, sign, movable object, hedges, bushes or other plants obstruct the line of sight at street intersections as defined in this section.

(3)

The sight line and the curb lines of the major street and minor street represent sight triangles that are to be free from obstructions as noted in this section.

(4)

The sight distance is measured from a point along the minor street intersection approach located 14.4 feet from the intersection of the centerline of the minor street with the curb line extension of the major street. This point is established at 3½ feet above the minor street pavement elevation. From this point a vehicle driver shall be able to view an object from a predetermined distance measured along the center of the lane of the intersecting major street. This object shall be visible from a height of 3½ feet above the pavement of the major street. The required distance varies with the posted and/or 85th percentile operating speed of the major street and the number of lanes on the major street.

(5)

Sight distance for various speeds and number of lanes for the intersection roadways are specified in Table 89-44-5 The area required to be free from obstructions for intersections on the inside of a horizontal curve of a major street requires sight distance restrictions more than a street intersection at 90 degrees.

(6)

For permitting purposes, a 30-foot sight triangle may be used instead of the line of sight calculations for corner lots located at the intersection of a private street with a private street. On such corner lots, no driveway, automobile, trailer, sign, movable object, fence, wall, hedge, or other structure shall be erected, placed, or maintained within the triangular area formed by the intersection projections of the lines forming the edge of the pavement at points which are 30 feet distant from the point of the intersection, measured along the edge of the pavement. Notwithstanding the foregoing, if the speed limit for either intersecting private street would require line of sight distances greater than the 30-foot sight triangle, it shall be the responsibility of the developer to comply with AASHTO safety guidelines and present those findings on the permit drawings.

Table 89-44-5 Minimum Required Sight Distances/Required Sight Triangles

Total number of lanes on major street	Minimum Cross Street/Intersection Sight Distances in Feet posted speed limit on major street*
	20 mph	25 mph	30 mph	35 mph	40 mph	45 mph	50 mph	55 mph	60 mph	65 mph	70 mph
2	225	280	335	390	445	500	555	610	665	720	775
3	240	295	355	415	475	530	590	650	710	765	825
4	250	315	375	440	500	565	625	690	750	815	875
5	265	335	400	465	530	600	665	730	795	860	930

 

*85 percent speed may be used in lieu of existing speed limit.

The value noted within Table 89-44-5 is measured in accordance with the following graphic figure:

Figure 89-41-3 Sight Distance Measurements

(Ord. No. O-180-2015, §§ 2(Exh. A), 4, 8-18-15; Ord. No. O-252-2015, §§ 3(Exh. B), 4, 11-17-15; Ord. No. O-055-2016, § 2, 3-22-16; Ord. No. O-156-2016, § 4, 8-23-16; Ord. No. O-112-2017, § 2(y), 6-20-17; Ord. No. O-093-2018, §§ 39, 40, 6-19-18)