St. Mary County, LA
124 public highway bridges
St. Mary County Bridge Snapshot
St. Mary County, Louisiana contains 124 public highway bridges in the FHWA National Bridge Inventory. Roughly 25.8% are rated “Good,” 54.8% “Fair,” 6.5% “Poor,” and 6.5% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.
Inspections in LA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Condition Distribution
All Bridges (124)
Landfill Ln.
FairOver: SIMMONS BAYOU
0.1 Mi W of Berwick Rd. S, St. Mary, LA
Dumesnil Rd
FairOver: VACHERIE CANAL
0.52 Mi N of La 83, St. Mary, LA
LA0182
FairOver: CREEK
1.1 MI NW OF LA 83, St. Mary, LA
LA0182
FairOver: BAYOU CHOUPIQUE
0.9 MI NORTH OF LA 83, St. Mary, LA
US0090
FairOver: DRAIN
1.3 MI EAST OF LA 671, St. Mary, LA
US0090
FairOver: DRAIN
2.99MI EAST OF LA 671, St. Mary, LA
US0090
FairOver: BARROW CANAL
0.7 MI EAST OF LA 182, St. Mary, LA
US0090
FairOver: CREEK
9.3 MI West of LA 182, St. Mary, LA
LA0317
FairOver: ICWW @ BAYOU SALE
6.2 MI S OF US 90(LA0317), St. Mary, LA
US0090
FairOver: CHOUPIQUE BAYOU
0.2 Mi. NW of LA 83, St. Mary, LA
US0090/Ramp
FairOver: CHOUPIQUE BAYOU
0.6 Mi N of LA 83, St. Mary, LA
US0090
FairOver: LITTLE BAYOU BLACK
8.3 MI EAST OF LA 182, St. Mary, LA
US0090
FairOver: LITTLE BAYOUBLACK
2.0 MI W of LA 182/LA70, St. Mary, LA
US0090
FairOver: CHOUPIQUE BAYOU
4.4 Mi SE of LA 318, St. Mary, LA
US0090/Ramp E
FairOver: 3rd St
0.15 Mi W of LA 182, St. Mary, LA
5th St
FairOver: FRANKLIN CANAL
0.2 Mi N of Willow St., St. Mary, LA
US0090
FairOver: WAX LAKE OUTLET
0.6 MI WEST OF LA 182, St. Mary, LA
US0090
FairOver: FRANKLIN CANAL
0.76 Mi SE of LA 3211, St. Mary, LA
US0090
FairOver: FRANKLIN CANAL
4.50 Mi W of LA 3215, St. Mary, LA
Lake Rd
FairOver: CD & N CANAL
2.53 Mi E of La 87, St. Mary, LA
Lagrange Rob. Rd
FairOver: YOKELY BAYOU
0.3 Mi W. Chatsworth rd, St. Mary, LA
Labau St.
FairOver: CHOUPIQUE BAYOU
0.4 Mi. SW of US 90 Front, St. Mary, LA
US0090
FairOver: ATCHAFALAYA RIVER
.3 Miles E of La 182 Ramp, St. Mary, LA
LA0087
FairOver: CHARENTON CANAL
0.5 MI WEST OF LA 326, St. Mary, LA
US0090
FairOver: HANSON CANAL
3.6 MI EAST OF LA 3211, St. Mary, LA
US0090
FairOver: HANSON CANAL
1.64 MI W of LA 3215, St. Mary, LA
US0090
FairOver: HANSON CANAL
3.6 MI EAST OF LA 3211, St. Mary, LA
US0090/FRONTAGE RD
FairOver: HANSON CANAL
0.5 Mi SW of LA 182, St. Mary, LA
LA0083
FairOver: BAYOU CHOUPIQUE
5.49 Mi E of LA 318, St. Mary, LA
US0090
FairOver: BAYOU CHOUPIQUE
0.5 Mi NW of LA 83, St. Mary, LA
US0090
FairOver: BAYOU CHOUPIQUE
0.4 Mi NW of LA 83, St. Mary, LA
US0090
FairOver: RAMP F
1.40 MI E of Berwick Exit, St. Mary, LA
US0090
FairOver: DRAINAGE DITCH
.95 Mi E of LA 3215, St. Mary, LA
US0090
FairOver: BAYOU PATTERSON
8.3 MI West of LA 182, St. Mary, LA
Willow St.
GoodOver: COULEE
1.2 Mi. W of LA 182, St. Mary, LA
LA0083
GoodOver: KELLY CANAL
2.80 MI WEST OF US 90, St. Mary, LA
US0090
GoodOver: CREEK
1.4 Mi W of La 662, St. Mary, LA
US0090
GoodOver: CREEK
6.24 Mi E of LA 182, St. Mary, LA
US0090
GoodOver: WEST APPR ATCHAFALAYA R
0.2 MI SE OF LA 182, St. Mary, LA
US0090
GoodOver: RAMP 'M'
6.3 MI W OF LA 662, St. Mary, LA
PARISH ROUTE 18
GoodOver: CHARENTON FLOODGATE
CHARENTON LEVEE, St. Mary, LA
US0090/SERVICE RD
GoodOver: COULEE
0.9 MI WEST OF LA 182, St. Mary, LA
LA0083
GoodOver: CREEK
2.9 Mi. East of LA 318, St. Mary, LA
LA0083
GoodOver: LITTLE BAYOU BLACK
0.6 MI NORTH OF LA 319, St. Mary, LA
US0090
GoodOver: CREEK
1.2 MI EAST OF LA 182, St. Mary, LA
US0090
GoodOver: 6th
1.4 MI W of LA 182/LA 70, St. Mary, LA
US0090
GoodOver: RAMP J
0.09 MI E of LA 182, St. Mary, LA
US0090
GoodOver: RAMP 'I'
0.17 MI E of LA 182, St. Mary, LA
US0090/Ramp C
GoodOver: 6th St.
8.9 MI EAST OF LA 182, St. Mary, LA
US0090
GoodOver: RAMP G
0.02 MI SW OF LA 182, St. Mary, LA
Read our methodology — how this data is sourced, computed, and verified.
Related
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |