8−175 SECTION 832 BRIDGE SIGNS 832.01 DESCRIPTION. This work consists of providing bridge identification signs and bridge minimum clearance signs on all bridges that intersect with highways, streets or ramps. Bridges over waterways, railroads or other non-vehicular fac ilities, unless specifically noted, will not require signs. Signs shall be installed for all directions of travel at locations described herein or as directed by the Engineer, all in accordance with these Specifications. 832.02 MATERIALS. 832.02.1 Reflectorized Sheeting. Reflectorized sheeting shall be Type III and shall otherwise conform to the requirements of Subsection M.16.02 of these Specifications. The colors used shall be white or silver-white for the bridge identifications signs and yellow for the bridge minimum clearance signs. 832.02.2 Aluminum Backing shall conform to the requirem ents of ASTM B209, Alloy 6061-T6 and shall be 0.063-inch in thickness. 832.02.3 Black Paint shall be a one component lead and chromate free paint suitable for use as a finish coat on the properly prepared reflectorized sheeting surface. The paint color shall meet the Federal Standard Number 595, Color 17038 (gloss black). Manufacturer's Product Data Sheets shall be submitted for approval of the Engineer prior to any use of the product in the manufacture of the signs.
832.02.4 Steel for wedge style anchors, clips, drop-in anchor bodies, and expansion plugs shall
meet the requirements of ASTM A108.
832.02.5 Fasteners for attaching bridge signs to fascia girders, either steel or concrete, shall be
hammer-driven lead anchors. The anchor consists of a 1/4-inch diameter shaft, 3/4-inch in length. The shaft has a round head at one end approximately ½-inch in diameter. The shaft is split into expandable sections ½-inch from its end. The anchor is provided with a zinc-coated nail, 1 _-inches long, placed in a hole through the center of the round head and through the solid portion of the shaft. 832.02.6 Plating for components shall be zinc and shall meet the requirements of ASTM B633, SC-1, Type III. 832.03 CONSTRUCTION METHODS. 832.03.1 Location.
a.Bridge Identification Signs . The location of the signs will be as noted on the Plans or as directed by the Engineer. The sign will be placed level on the web of the girder, face of concrete beam, wall or parapet as appropriate. The sign sha ll be centered vertically and centered above the 8−176 travel lanes.
b.Bridge Minimum Clearance Signs. The location of the signs and the measured minimum vertical clearance of a particular bridge will be provided by the Resident Engineer. The sign will be placed above a travel lane at the point of minimum vertical clearance. The signs shall be located both horizontally and vertically as close to the actual point of minimum vertical clearance as is practical. 832.03.2 Fabrication. The aluminum sheet shall be cut to the sizes outlined in details shown on the Plans or in standard details. The reflective sheeting shall be placed upon and completely cover the aluminum backing sheet. The lettering shall be painted in black upon the reflective sheeting as outlined in the details shown on the Plans. All lettering and numerals shall be centered on the sign panel. All letters and numerals shall be drawn in accordance with the "Standard Alphabets for Highway Design" by the U.S. Department of Transportation, Federal Highway Administration, Office of Traffic Operations. All characters for bridge identification signs shall be 8 inches in height using a series "D" stroke (1.25" wide). All characters for bridge minimum clearance signs shall be 12 inches in height using a series E stroke (2.06" wide) for roadways with posted speed limits of forty miles per hour or greater and 8 inches in height using a series E stroke (1 .38" wide) for roadways with posted speed limit less than forty miles per hour. 832.03.3 Attachment.
a.Position. Signs shall be positioned on the fascia girders as described above in Para. a of Subsection 832.03.1 . A minimum of four fasteners will be required per sign and they shall be evenly spaced so that the maximum distance between fasteners is no greater than 24 inches.
b.Installation. Signs to be located on steel or concrete fascia girders shall be attached as follows:
1.The sign panels shall be fabricated with 9/32-inch diameter holes as indicated on the Plans.
2.Using the sign panel as a template, locate the center of each hole on the face of the girder.
3.On steel girders, drill a 1/4-inch diameter hole through the girder web. On concrete girders, drill a 1/4-inch diameter hole for a depth of 1 _-inches. The Contractor shall insure that the length of the fastener does not extend beyond the minimum concrete cover to the reinforcing steel or prestressing steel. If concrete cover becomes a hinderance to fastener selection, then additional fasteners can be utilized.
4.Place the bridge signs against the girder fascias such that the holes line up.
5.Place the lead anchors specified in Subsection 832.02.5 , above, through the sign and into the holes in the girders.
6.With a hand hammer, drive the nail protruding from the head of the anchor until it is flush 8−177with the head.
832.03.4 Approvals. The Contractor shall submit the following for approval by the Engineer.
1.Complete shop drawings of the Bridge Identification Signs and Minimum Clearance Signs demonstrating that the signs comply with these Specifications and the details indicated on the Plans, as applicable. The drawings shall also contain the proposed message for the signs and a bill of materials describing the proposed attachment hardware along with manufacturer's specifications for the proposed hardware.
2.A sketch indicating the specific proposed location of each sign.
832.04 METHOD OF MEASUREMENT. "Bridge Identification Signs" and "Bridge Minimum
Clearance Signs" will be measured for payment by t he number of each sign installed in accordance with the Plans and/or as directed by the Engineer.
832.05 BASIS OF PAYMENT. The accepted quantities of "Bri dge Identification Signs" and "Bridge
Minimum Clearance Signs" will be paid for at their respective contract unit prices per each such sign as listed in the Proposal. The prices so-stated constitute full and complete compensation for all labor, materials and equipment, and for all incidentals required to finish the work, complete and accepted by the Engineer. SECTION 833 GRANITE IDENTIFICATION TABLETS
833.01 DESCRIPTION. This work consists of providing granite identification tablets on bridges at
the locations indicated on the Plans, all in accordance with these Specifications. 833.02 MATERIALS.
833.02.1 Granite Tablets. Granite shall be fine grained, light gray granite of sound, compact structure, resistant to weathering action, uniform in color, free from seams, cracks, laminations and
minerals which by weathering would cause discoloration or deterioration.
a.Additional Requirements. The granite tablets shall conform to the following additional requirements.
1.Granite stone shall conform to the material characteristics and physical requirements of ASTM C615, Standard Specification for Granite Dimension Stone.
2.Finish . Face shall be sand rubbed.
Source: Rhode Island Standard Specifications (Bluebook), 2024 Edition. Pages 509–511 of 826.