2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS CATEGORY 400 STRUCTURES SECTION 470 — UTILITIES ON STRUCTURES
470.01 Description
Place utility markers to identify utilities when they are newly installed, replaced, or relocated. Place the identification markers as specified herein and as approved.
470.02 Materials
Utility Facility Identification.
a.Any new or replacement utility facility installed shall include an identification marker with the first 50 ft of the facility, the last 50 ft of the facility, and at intervals of 100 ft in-between.
1.Adjust the spacing to have one marker in every bay bounded by beams and diaphragms through which the utility passes.
b.The marker shall consist of decals or stenciling onto the pipe or carrier according to industry standard color coding with high quality black or white print.
1.Provide lettering height of 1/3 the pipe diameter, but not smaller than 1 in. nor larger than 4 in.
2.The markers shall include the name of the utility and a description of the contents including pressure, voltage, and any other pertinent information required by industry standards. LABEL BACKGROUND COLOR / LETTERING COLOR CONTENT RED Electrical Power YELLOW Gas, Oil Steam, Petroleum or Gaseous Materials ORANGE Communication, CATV, Alarm, or Signal BLUE Potable Water PURPLE Reclaimed Water, Irrigation, or Slurry GREEN Sewer and Storm Drain Figure 470.02(b) – Industry Standard Color Coding
470.03 Construction
to the pertinent items. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS Place identification markers within the first and last 50 ft of the structure, and at intervals not to exceed 100 ft. Ensure that the surface to receive the marker is properly cleaned and prepared prior to the application. Orient the markings for best visibility.
470.04 Measurement and Payment
The application of utility markers on structures will not be measured but the cost will be incidental 475 — REMOVAL AND REPLACEMENT OF HOT MIX ASPHALT (HMA) WEARING SURFACE 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS CATEGORY 400 STRUCTURES SECTION 475 — REMOVAL AND REPLACEMENT OF HOT MIX ASPHALT (HMA) WEARING SURFACE
475.01 Description
Remove the existing asphalt mix wearing surface from the bridge deck, remove additional areas of deteriorated concrete, perform deck repairs, and place asphalt mix wearing surface as specified in the Contract Documents.
475.02 Materials
Asphalt Mix 904.04
475.03 Construction
Refer to Section 508 and Section 504, and as specified herein. Remove the existing asphalt mix wearing surface to the limits shown on the Plans. Remove the asphalt mix wearing surface with equipment that can remove the wearing surface without damaging the existing concrete deck. Methods used may be as specified herein or as approved.
475.03.01 Equipment and Procedures. Removal Equipment. Use equipment as specified in 426.03.02(a), 426.03.02 (c), 426.03.02 (d)
and 426.03.02 (e). Removal Procedures. The Engineer will inspect and determine if any damage occurred to the existing bridge that was caused by the Contractor’s removal operations. Repair any of the damaged portions of the existing bridge to the satisfaction of the Engineer, at no additional cost to the Administration. All removed material shall become the Contractor’s property and shall be disposed of at approved spoil locations. Prior to the removal and replacement of the asphalt mix wearing surface, perform a test strip removal on the low-side shoulder of each bridge. The Engineer will determine the dimensions of the test strip in the field. Notify the Engineer at least 48 hours prior to performing the test strip operation. Schedule and perform the test strip removal so that the bridge work can be determined prior to performing any specified resurfacing on the approach roadway to the bridges.
Source: Maryland Standard Specifications for Construction and Materials, 2025 Edition. Pages 593–594 of 1,113.