611.01 611-1 SECTION 611 CATTLE GUARDS DESCRIPTION
611.01 This work consists of the construction of cattle guards per these specifications and in
conformity with the lines, grades, and details shown on the plans or established. MATERIALS
611.02 Concrete shall conform to the requirements of Section 601. Reinforcing steel shall
conform to the requirements of Section 602. Structural steel shall conform to the requirements of Section 509. Timber shall conform to the requirements of Section 508. Fencing items shall conform to the requirements of Section 607. CONSTRUCTION REQUIREMENTS
611.03 Cattle guards shall be constructed per the details shown on the plans. All work shall be
done per the applicable construction methods contained in these specifications. METHOD OF MEASUREMENT
611.04 Cattle guards will be measured by the number of units of the various sizes installed and
accepted. BASIS OF PAYMENT
611.05 The accepted quantities of cattle guards of the various sizes will be paid for at the
contract unit price each when included in the bid schedule. Payment will be made under: Pay Item Pay Unit _____Cattle Guard Each 611.05 611-2 THIS PAGE INTENTIONALLY LEFT BLANK 612.01 612-1 SECTION 612 Section 207DELINEATORS AND REFLECTORS DESCRIPTION
612.01 This work consists of the installation and furnishing of delineators and reflectors per
these specifications and in conformity with the lines, grades and details shown on the plans or established. MATERIALS
612.02 Materials for the various types of delineators and reflectors shall be as follows:
a.Delineators .
1.Steel Posts. Details for each type of delineator are shown on the plans. Posts shall conform to the requirements shown on the plans, and reflectors shall conform to the requirements in subsections 713.07 and 713.10.
2.Flexible Posts. Flexible posts shall be selected from CDOT’s Approved Products List (APL) and shall conform to the requirements in subsection 713.06.
b.Reflectors:
1.Reflector Strip. Reflector strips shall be selected from CDOT’s APL. Details for reflector strips are shown on the plans. Reflectivity shall conform to the requirements in subsection 713.07 and 713.10.
2.Guardrail Reflector Tabs. Details for the guardrail reflector tabs are shown on the plans. Reflectivity shall conform to ASTM D4956 Type IV.
3.Barrier Reflector. Details for barrier reflectors are shown on the plans. Reflectivity shall conform to the requirements in subsection 713.10.
4.Median Barrier Reflector. Details for median barrier reflectors are shown on the plans. Reflectivity shall conform to the requirements in subsection 713.10. CONSTRUCTION REQUIREMENTS
612.03 Spacing, location, color of reflectors and placement of delineator posts shall be as
shown on the plans. The Contractor shall install reflector strips in conformance with manufacturer’s recommendations. The length of each reflector strip shall be 34 inches, unless otherwise approved. The Contractor shall adjust the spacing between reflector strips as recommended by the manufacturer to fit the location called for in the Contract. Cutting of the reflector strips will not be permitted.
Source: Colorado Standard Specifications for Road and Bridge Construction, 2023 Edition. Pages 637–638 of 943.