St. Mary County, LA
124 public highway bridges
St. Mary County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, St. Mary County, Louisiana contains 124 public highway bridges. Roughly 25.8% are rated “Good,” 54.8% “Fair,” and 6.5% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
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
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.