| US20 over Stream | 1950 | 9,060 | Good |
| US385 over Chadron Creek Tributary | 1954 | 2,930 | Good |
| US20 over Stream | 1952 | 2,425 | Good |
| US385 over Chadron Creek | 1993 | 2,350 | Good |
| US385 over Chadron Creek | 1954 | 2,350 | Good |
| US385 over Chadron Creek Tributary | 1954 | 2,350 | Good |
| US385 over White River | 1937 | 2,230 | Good |
| US385 over White River Tributary | 1992 | 2,230 | Good |
| US385 over White River Tributary | 1992 | 2,230 | Good |
| US385 over Rush Creek | 1992 | 2,125 | Good |
| US20 over Big Bordeaux Creek | 1992 | 2,105 | Good |
| US20/N2/N71 over BNSF RR 064-831-m | 1935 | 1,935 | Good |
| US385 over Chadron Creek Tributary | 1938 | 1,890 | Good |
| US385 over Cottonwood Creek | 1975 | 1,890 | Good |
| US385 over Niobrara River | 1975 | 1,890 | Good |
| US385 over Pepper Creek | 1975 | 1,890 | Good |
| US20 over Stream | 1949 | 1,880 | Good |
| US20 over Stream | 1949 | 1,880 | Good |
| US20 over Stream | 1957 | 1,880 | Good |
| US20 over Ash Creek | 1961 | 1,875 | Good |
| US20 over Chadron Creek | 1961 | 1,875 | Good |
| US20 over Dead Horse Creek | 1961 | 1,875 | Good |
| US20 over Indian Creek | 1961 | 1,875 | Fair |
| US20 over Trunk Butte Creek | 1961 | 1,875 | Good |
| US20 over Squaw Creek | 1959 | 1,605 | Good |
| US20 over White Clay Creek | 1959 | 1,605 | Good |
| US20 over Stream | 1985 | 1,050 | Good |
| US20 over White River | 1932 | 1,050 | Good |
| N71 over Sand Canyon | 1932 | 885 | Good |
| N71 over Stream | 1932 | 885 | Good |
| N71 over Stream | 1932 | 885 | Good |
| US20 over Soldier Creek | 1932 | 815 | Good |
| N71 over Spring Creek | 1959 | 345 | Good |
| N71 over Stream | 1959 | 345 | Good |
| N71 over Stream | 1959 | 345 | Good |
| N71 over White River | 1959 | 345 | Fair |
| FAS1225 Slim Butte over White River | 1981 | 240 | Good |
| FAS1225SLIM Butte over Big Bordeaux Creek | 1986 | 240 | Good |
| S23A Whitney Spur over White River | 1937 | 225 | Poor |
| N71 over Big Cottonwood Creek | 1962 | 185 | Good |
| N71 over Little Cottonwood Creek | 1962 | 185 | Good |
| N71 over Sand Creek | 1962 | 185 | Good |
| N71 over Stream | 1962 | 185 | Fair |
| Fas 1215 over Sand Creek | 2014 | 140 | Good |
| Lone Tree Road over Big Cottonwood Creek | 1986 | 100 | Good |
| Main Street over White River | 1935 | 100 | Poor |
| Fas 1110 over Stream | 1934 | 95 | Fair |
| Coll 7180 over Squaw Creek | 1992 | 90 | Good |
| Old Highway 20 over Stream | 1937 | 80 | Fair |
| FAS1205DEAD Horse over Dead Horse Creek | 2000 | 75 | Fair |
| Fas 1205 Dead Hors over Dead Horse Creek | 1989 | 75 | Fair |
| Fas 1190 Bergfield over Big Cottonwood Creek | 1991 | 65 | Fair |
| County Highway over Little Cottonwood Creek | 1992 | 55 | Good |
| Airport Road over White River | 1936 | 50 | Poor |
| Beaver Valley Rd over White River Trib | 1939 | 50 | Good |
| Coll 7176 over West Ash Creek | 2016 | 50 | Good |
| Coll 7189 over Stream | 1936 | 50 | Fair |
| County Highway over White River | 1935 | 50 | Fair |
| County Highway over White River | 1992 | 50 | Good |
| Galey Road over White River | 1992 | 50 | Fair |
| Redfern Rd over Little Bordeaux Creek | 2020 | 50 | Good |
| Coll 7189 Long Rd. over Stream | 2003 | 45 | Fair |
| Coll 7191 over White River | 1978 | 40 | Good |
| County Highway over White River | 1935 | 40 | Poor |
| COLL7186ANTELOPE R over Stream | 1978 | 35 | Good |
| Coll 7183 over White River | 1985 | 35 | Fair |
| Alpha Road over Bordeaux Creek | 1935 | 30 | Fair |
| Buttermilk Road over Chadron Creek | 1935 | 30 | Fair |
| Coll 7181 over Squaw Creek | 1959 | 30 | Good |
| Connell Road over White River | 1991 | 30 | Fair |
| County Highway over Stream | 1935 | 30 | Fair |
| Dodd Road over White River | 1992 | 30 | Good |
| Hollibaugh Rd over Stream | 1935 | 30 | Fair |
| Moody Road over Stream | 1992 | 30 | Good |
| N. Whitney Lake Rd over White River | 2000 | 30 | Good |
| Old Dunlap Road over Niobrara River | 1983 | 25 | Good |
| Pineview Road over Big Bordeaux Creek | 1935 | 25 | Poor |
| Arner Road over White River | 1995 | 20 | Good |
| Coll 7134 over BNSF RR 064-820-a | 2004 | 20 | Good |
| West Ash Road over West Ash Creek | 1993 | 20 | Fair |
| County Highway over White River | 1992 | 15 | Good |
| Mann Road over Chadron Creek | 1935 | 15 | Poor |
| Field Drive over Spring Creek | 1955 | 10 | Poor |
| Herford Rd. over Stream | 1935 | 10 | Fair |
| Mann Road over Chadron Creek | 1935 | 10 | Poor |
| Mill Rd over White River | 1992 | 10 | Good |
| Country Club Road over Chadron Creek | 1935 | 5 | Poor |
| County Highway over Squaw Creek | 1935 | 5 | Poor |
| Lembke Rd over Mirage Flats Canal | 1945 | 5 | Fair |
| West Dakota Jct Rd over White River | 2019 | 5 | Good |