1.1 
GENERALLY
Unless otherwise approved by the administration, provisions must be made for the extension of arterials; collector streets shall be provided for circulation of traffic through the subdivision; and adequate local streets provided to accommodate the subdivision.
1.2 
ALIGNMENT
All arterials and the collector streets shall be continuous or in alignment with existing streets, unless variations are deemed advisable by the administration after consideration of recommendations by the Building Inspector and/or administration. Curvilinear streets shall be allowed. Off-center street intersections shall not be approved.
1.3 
GRADES
Arterials shall have a maximum grade of five (5) percent for a maximum continuous distance of two hundred (200) feet. All streets must have a minimum grade of at least one-half (1/2) of one (1) percent. Centerline grade changes with an algebraic difference of more than two (2) percent shall be connected with vertical curves of sufficient length to provide a minimum of six hundred (600) feet sight distance on arterials and four hundred (400) feet sight distance on collector streets and local streets. All vertical curves must be of such length so as to provide comfortable flow of traffic. Wherever a cross slope is necessary or desirable from one curb to the opposite curb, such cross slopes shall not be less than one-tenth (0.1) inch in one (1) foot nor more than one-half (1/2) inch in one (1) foot.
1.4 
BASE
Arterials shall have a ten (10) inch compacted base constructed of crushed stone. Collector streets shall have a six (6) inch compacted base of crushed stone, and local streets shall have a six (6) inch compacted base of crushed stone or gravel. All crushed stone must meet standards established in Item 215 of the current Texas Highway Department Standard Specifications for Road and Bridge Construction. Gravel shall meet the standards specified by the Building Inspector. All street bases shall be constructed on a subgrade approved by the Building Inspector before base material is placed. Standard methods of compaction of base shall be used, and base material shall be applied and compacted in two (2) courses. Street bases shall be approved by the Building Inspector before a surface course is applied.
1.5 
WIDTHS
Street widths shall be consistent with Table 1 below.
TABLE 1 SUBDIVISION STREET STANDARDS
STREET TYPE
R-O-W WIDTH
PAVEMENT WIDTH1
CURB AND GUTTER REQUIRED2
Divided Highway (4 lanes)
200'
2 x 48
No
Highway, 4-Lane Undivided
150'
80'
No
Arterial
90'
64'
Yes
Major collector
70'
40'
Yes
Collector
60'
30'
Yes
Local
60'
26'
Yes
1 For curbed sections, pavement width is measured from back of curb to back of curb.
2 One-foot flat curb and 4:1 slope bar ditches may be substituted for curb and gutter with approval by the City’s Engineer.
1.6 
SURFACE
Surfacing of all streets shall be mandatory, and must be completed and inspected by the Building Inspector before streets are accepted for maintenance by the City. The minimum acceptable surface for arterials is two (2) inches of rock asphalt or hot mix asphaltic concrete, either hot or cold lay; for collector streets and residential streets one [and] one-half (1-1/2) inch of rock asphalt or hot mix asphaltic concrete. The type of surface course to be used shall be designated by the Building Inspector. All street construction shall be performed by a bonded contractor who has filed a faithful performance bond for the City.
1.7 
INTERSECTIONS
Arterials shall have a minimum radius of the centerline of one thousand, nine hundred ten (1,910) feet; collector streets shall have a minimum radius at the centerline of nine hundred fifty-five (955) feet; local streets shall have a minimum radius at the centerline of five hundred (500) feet, unless in special circumstances the commission approves a local street with a smaller minimum radius.
1.8 
CONTINUITY
The system of streets designated for the subdivision, except in unusual cases, must connect with streets already dedicated in adjacent subdivisions; and where other than adjacent connections are platted, must in general be reasonable projection of streets in the nearest subdivided tracts, and must be contained [continued] to the boundaries of the tract subdivided, so that other subdivisions may connect therewith. Reserve strips of land controlling access to or egress from other property or to or from any street or alley or having the effect of restricting or damaging the adjoining property for subdivision purposes or which will not be taxable or accessible [assessable] for special improvements shall not be permitted in any subdivision unless such reserve strips are conveyed to the City in fee simple.
1.9 
DEAD-ENDS
Dead-ends courts or places may be permitted where the form or contour of the land makes it difficult to plat with connecting streets; however, except in unusual cases, no dead-end streets will be approved unless such dead-end streets are provided to connect with future streets in adjacent land. Such courts or places shall provide proper access to all lots and shall generally not exceed four hundred (400) feet in length and a turn-around shall be provided at the closed end, with an outside radius or [of] at least sixty (60) feet to the face of the curb and minimum radius of seventy (70) feet to the property line.
(Ordinance 9802-311 adopted 2/18/98)
The City shall pay the cost of purchasing and installing street posts and markers at each street intersection.
(Ordinance 9802-311 adopted 2/18/98)
Alleys or loading courts shall be provided in business blocks. Alleys need not be provided in residential blocks unless they are specifically required by the commission. Where alleys are required in residential blocks, the width of such alleys is optional, but in no case may the width of such an alley be less than twenty (20) feet. All alleys shall be brought to an established grade approved by the Building Inspector and/or City administration, and based with six (6) inches or [of] compacted road gravel.
(Ordinance 9802-311 adopted 2/18/98)
In general, intersecting streets, determining block lengths, shall be provided at such intervals as to serve cross traffic adequately, and to meet existing streets or customary subdivision practices in the neighborhood. Where no existing plats control, the blocks shall be not more than six hundred (600) feet in length nor less than three hundred (300) feet in length except in unusual cases. In an unusual case where a block is allowed to be more than six hundred (600) feet long a connecting sidewalk four (4) feet wide and located on a four (4) foot dedicated easement may be required across the middle portion of such block for pedestrian use. Block widths shall not exceed three hundred (300) feet nor be less than two hundred forty (240) feet, except in unusual cases.
(Ordinance 9802-311 adopted 2/18/98)
Curb and gutter shall be required to be constructed on all streets and avenues. Radial curb and gutter shall be constructed at each corner block to which curb and gutter is constructed. Lay down curbs shall be constructed across all alley intersections. All curb and gutter and all lay down curbs shall be constructed in accordance with the plans and specifications on file in the office of the Building Inspector and shall be constructed upon a compact base of minimum depth of four (4) inches and extending at least 6 inches (6") behind the back of the curb. All concrete used shall be Class B as now specified by the Texas Highway Department, Item 403.8. Valley gutters are required and shall be paved with concrete meeting Texas Highway Department Specifications for Class A concrete. All materials shall meet the specifications of the City.
(Ordinance 9802-311 adopted 2/18/98)
Generally, residential sidewalks shall be required on both sides of the street; shall not be less than four (4) feet in width, parallel to and not more than two (2) feet above or below the adjacent curb grade; and shall be located one (1) foot inside the dedicated street line and situated wholly within the dedicated street. Sidewalks abutting business property shall have a minimum width of ten (10) feet. Parkways, the area between curbs and the right-of-way line, shall be excavated or filled to a grade parallel with the longitudinal street grade, and the ground elevation at the right-of-way line shall be not more than two (2) feet, nor less than three (3) inches above the elevation of the top of the adjacent curb. Landing walks of a width not less than eighteen (18) inches may be installed abutting the rear of the curb.
(Ordinance 9802-311 adopted 2/18/98)
7.1 
DRAINAGE REQUIRED
Structures for drainage shall be constructed in such locations and of such size to adequately serve the subdivision and the contributing drainage area.
7.2 
DRAINAGE DITCHES
Before the approval of the final plat, the developer and/or owner of the subdivision shall:
a. 
Enclose all existing open drainage ditches in concrete or corrugated metal structures of such size as will adequately serve the subdivision and adjacent drainage area; or
b. 
Make an escrow deposit with the City Secretary of sufficient funds to perform such work upon the understanding that such work will be done by him within eleven (11) months following the approval of the final plat, or the City will be authorized to use said escrow deposit to perform work; or
c. 
Furnish a bond to the City Secretary, payable to the City in an amount sufficient to perform such work as determined by the City Building Inspector, conditioned that he will have the work done according to specifications within eleven (11) months following the approval of the final plat.
7.3 
STORM SEWERS AND CURB INLETS
Storm sewers shall be provided and curb inlets located as to properly drain all streets and intersections. Sufficient curb inlets shall be provided so as to limit the maximum length of water flow on paved streets to five hundred (500) feet. The size and location of all sewers and curb inlets shall be approved by the City Building Inspector and/or the City administration.
(Ordinance 9802-311 adopted 2/18/98)