12 bridges with vertical clearance data on US-171 in Louisiana. Lowest: 19.7ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 19.7ft | Us0171 | Mp Rr & Us 190 | 6.5 Mi S Of La 110 | 2007 | Map |
| 154.9ft | Us0171 | I-10 | 0.3 Mi N Of Hwy 3020 | 1963 | Map |
| 164.7ft | Us0171 | I-10 | 0.3 Mi N Of La 3020 | 1963 | Map |
| 224.1ft | Us0171 | Mp Railroad, Creek | 1.0 Mi. N. Of La 3132 | 1976 | Map |
| 225.7ft | Us0171 | Uprr | .1 Mi North Of Us 90 | 1972 | Map |
| 227.4ft | Us0171 | Missouri Pacific Railroa | 0.7 Mi. S. Of La 511 | 1986 | Map |
| 235.6ft | Us0171 | Kcs Rr | 0.45 Mi. North Of La 483 | 2003 | Map |
| 238.2ft | Us0171 | So. Pac Rr | .1 Mi North Of Us 90 | 1994 | Map |
| 241.5ft | Us0171 | Kcs Rr | 0.45 Mi. North Of La 483 | 2003 | Map |
| 271.3ft | Us0171 | Trenton Rd., Rr | 6.1 Mi. N.Of La 512 | 2009 | Map |
| 271.3ft | Us0171 | City St, Rr | 5.5 Mi. S. Of Us 84 | 2009 | Map |
| 999.7ft | Us0171 | Lewis Creek Relief | 2.6 Mi N Of La 175 | 2005 | Map |