| Empire Street over Drainage | Poor | 34.1 ft | 100 | 1953 |
| German Gulch RD over Int Victor I 15 003 | Poor | 210.0 ft | 100 | 1961 |
| I 15 over Bell Creek | Fair | 31.8 ft | 19,755 | 1963 |
| S Montana ST over Silver Bow Creek | Fair | 30.8 ft | 14,718 | 1970 |
| I 15 over Int Rocker | Fair | 118.1 ft | 10,824 | 1968 |
| I 15 over Int Rocker | Fair | 118.1 ft | 10,824 | 1968 |
| I 90 over Whitetail Creek | Fair | 29.5 ft | 10,349 | 1965 |
| I 15 over Int S Montana Street | Fair | 168.0 ft | 9,878 | 1961 |
| I 15 over Int S Montana Street | Fair | 168.0 ft | 9,878 | 1961 |
| I 90 over Sep Laird St-frontage RD | Fair | 158.1 ft | 7,506 | 1967 |
| I 15 over Rr-local | Fair | 255.9 ft | 7,379 | 2010 |
| I 15 over Rr-local | Fair | 242.8 ft | 7,379 | 2012 |
| I 90 over Sep Laird St-frontage RD | Fair | 158.1 ft | 7,361 | 1967 |
| I 90 over Int Nissler | Fair | 302.8 ft | 7,361 | 1968 |
| I 90 over Int Nissler | Fair | 293.0 ft | 7,361 | 1968 |
| I 15 over Int Harrison AVE | Fair | 209.0 ft | 7,009 | 1960 |
| I 15 over Int Harrison AVE | Fair | 209.0 ft | 7,009 | 1960 |
| Shields AVE over Drainage | Fair | 30.2 ft | 6,411 | 1958 |
| Shields AVE over Rr | Fair | 215.9 ft | 6,411 | 1958 |
| Continental DR over Sep I 15 | Fair | 265.7 ft | 5,500 | 1963 |
| I 90 over Int I-15 | Fair | 192.9 ft | 5,476 | 1963 |
| I 90 over Int I 15 | Fair | 193.9 ft | 5,476 | 1963 |
| Lexington AVE over Sep Lexington ST 016 | Fair | 223.8 ft | 3,768 | 1960 |
| I 15 over Local-creek-rarus Rr | Fair | 613.2 ft | 3,728 | 1961 |
| I 15 over Local-creek-rarus Rr | Fair | 598.4 ft | 3,728 | 1961 |
| I 15 over Int Moose Creek | Fair | 76.1 ft | 2,354 | 1976 |
| I 15 over Int Moose Creek | Fair | 76.1 ft | 2,354 | 1976 |
| I 15 over Int Divide-hwy 43 | Fair | 153.5 ft | 2,283 | 1976 |
| I 15 over Tucker Creek Road | Fair | 76.1 ft | 2,283 | 1976 |
| I 15 over Tucker Creek Road | Fair | 76.1 ft | 2,283 | 1976 |
| I 15 over Highland Road | Fair | 76.1 ft | 2,283 | 1976 |
| I 15 over Highland Road | Fair | 76.1 ft | 2,283 | 1976 |
| I 115s over Sep I 15 | Fair | 243.8 ft | 2,242 | 1964 |
| I 115s over Excelsior AVE | Fair | 155.8 ft | 2,242 | 1955 |
| Centennial AVE over Rr 015 | Fair | 162.4 ft | 2,202 | 1955 |
| I 15 over Rr (tracks Not In Use) | Fair | 219.2 ft | 2,176 | 1986 |
| I 15 over Rr (tracks Not In Use) | Fair | 231.0 ft | 2,176 | 1966 |
| N Main ST over Canal - Walking Path | Fair | 98.1 ft | 2,107 | 2009 |
| Sheridan AVE over Sep Sheridan ST I 15 002 | Fair | 209.0 ft | 1,995 | 1960 |
| Oregon AVE over Sep Oregon Street 017 | Fair | 225.7 ft | 1,232 | 1960 |
| S Rocker RD over Silver Bow Creek 007 | Fair | 50.9 ft | 869 | 1987 |
| Fairmont RD over Int Gregson-i 90 | Fair | 264.4 ft | 727 | 1967 |
| Fairmont RD over Silver Bow Creek | Fair | 107.6 ft | 727 | 1980 |
| S 43 over Divide Creek | Fair | 38.1 ft | 719 | 1956 |
| S 43 over Big Hole River | Fair | 304.1 ft | 616 | 1968 |
| Burlington ST over Sep I 90 006 | Fair | 254.3 ft | 583 | 1964 |
| S 41 over Fish Creek | Fair | 56.4 ft | 407 | 1934 |
| Trapper Creek RD over Big Hole River 008 | Fair | 219.8 ft | 191 | 2001 |
| Silver Bow RD over Silver Bow Creek 014 | Fair | 80.1 ft | 102 | 2006 |
| I 115s over Excelsior AVE | Fair | 155.8 ft | 100 | 1955 |
| Pumphouse RD over Big Hole River 009 | Fair | 232.0 ft | 100 | 1914 |
| Palmer ST over Int Ramsey I 90 013 | Fair | 264.4 ft | 100 | 1967 |
| German Gulch RD over Rr 012 | Fair | 286.4 ft | 100 | 2014 |
| Mt Highland DR over Int Cont DR I 90 011 | Fair | 294.9 ft | 100 | 1969 |
| N Montana ST over Walking Path 004 | Fair | 51.8 ft | 100 | 1962 |
| Divide Creek RD over Int Feely I 15 001 | Fair | 284.8 ft | 51 | 1976 |
| No Data Entered over Beefstraight CR | Fair | 24.6 ft | 50 | 1963 |
| Miles Crossing over Silver Bow Creek 010 | Fair | 40.0 ft | 38 | 2007 |
| 18131: Maiden Rock over Big Hole River | Fair | 202.1 ft | 25 | 1951 |
| I-90 E&w over Abandoned Railroad | Good | 21.7 ft | 15,011 | 2019 |
| I 15 over Local-rarus Rr | Good | 366.1 ft | 7,379 | 2018 |
| I 15 over Silverbow Creek-rr | Good | 598.1 ft | 7,379 | 2018 |
| I 15 over Local Rarus-rr | Good | 366.1 ft | 7,379 | 2019 |
| I 15 over Silverbow Creek-rr | Good | 598.1 ft | 7,379 | 2019 |
| I 15 over Int Buxton-buxton RD | Good | 128.0 ft | 2,570 | 1976 |
| I 15 over Int Buxton-buxton RD | Good | 128.0 ft | 2,570 | 1976 |
| I 15 over Int Divide-hwy 43 | Good | 152.6 ft | 2,283 | 1976 |
| Soap Gulch RD over Sep Soap Crk RD I 15 005 | Good | 281.8 ft | 100 | 1973 |
| No Data Entered over German Gulch | Good | 24.6 ft | 50 | 1966 |
| No Data Entered over Fish CR | Good | 24.6 ft | 40 | 1986 |