Specifications include, but are not limited to: This project is to rehabilitate eight bridges in District 1 between RP 117.07 and RP 148.03 on Interstate 90 (I-90) in Missoula and Granite County. Eight of the bridges carry I-90 and one is an overpass over I-90. The scope of work varies for each structure, but generally includes rehabilitation activities such as bridge deck milling and overlay work, bridge rail repairs or replacement, expansion joint replacement, guard angle removal, median barrier replacement, roadway approach work, guardrail replacement, barrier end repairs, substructure repair, and replacement of existing overhead signs. Two structures (MDT Structure ID 01455 and 01456) are full deck replacements. IM 90-1(163)110 This project is located along Interstate 90, from the Blackfoot River bridge at reference post (RP) 110.2 located east of the Bonner Interchange and extends east for 9.0 miles on I-90 to RP 119.2. This project includes milling and replacing the asphalt of the passing lanes and inside shoulders, improving bridge end connections, overlaying a bridge deck, applying a new chip seal surface, then applying a full width fog seal, and providing new signing and pavement markings. IM 90-3(146)135 Cold milling and PMS overlay in the passing lane, full width seal and cover, fog seal, inside and outside shoulder rumble strips, and pavement markings on the Bearmouth East & West project located in Granite County. The project is located on Interstate 90, beginning about 3.3 miles west of the Bearmouth Interchange (RP 134.8) and extends easterly 15.2 miles to RP 150.0, about 3.4 miles west of the western Drummond Interchange.