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)
US0090-W
GoodOver: SOUTHERN PACIFIC RAILROA
2.5 MI EAST OF US90, St. Mary, LA
US0090
GoodOver: RAMP 'K'
0.9 MI E of LA 182, St. Mary, LA
US0090
GoodOver: RAMP 'L'
0.9 MI E of LA 182, St. Mary, LA
US0090
GoodOver: 7th Street
1.34 Mi. E. of 182 US 90, St. Mary, LA
LA0323
GoodOver: Bayou Teche
0.2 Mi W. of LA 87, St. Mary, LA
LA0182
GoodOver: YOKELY BAYOU
0.26 MI S of LA 3211, St. Mary, LA
US0090
GoodOver: WAX LAKE OUTLET
0.6 MI EAST OF LA 182, St. Mary, LA
US0090
GoodOver: RAMP 'N'
0.05 MI E OF DR. MLK BLVD, St. Mary, LA
US0090
GoodOver: VACHERIE CANAL
1.4 MI EAST OF LA 318, St. Mary, LA
Thorguson Dr.
GoodOver: SIMMONS BAYOU
0.7 Mi S of US 90, St. Mary, LA
US0090
GoodOver: TEXAS GAS PIPELINE
6.4 Mi E of LA 182, St. Mary, LA
US0090
GoodOver: TEXAS GAS PIPELINE
2.27 Mi W of LA 662, St. Mary, LA
US0090
GoodOver: PATTERSON CANAL
2.6 MI EAST OF LA 182, St. Mary, LA
US0090
GoodOver: CREEK
2.0 MI EAST OF LA 182, St. Mary, LA
US0090
GoodOver: CREEK
2.1 MI EAST OF LA 182, St. Mary, LA
US0090
GoodOver: CREEK
2.1 MI EAST OF LA 182, St. Mary, LA
LA0324
PoorOver: BAYOU TECHE
0.1 MI WEST OF LA 326, St. Mary, LA
LA0182
PoorOver: CHARENTON
1.1 Miles South of LA 83, St. Mary, LA
LA0182
PoorOver: ATCHAF.R/BERWICK BAY
1.4 MI WEST OF US 90, St. Mary, LA
LA0087
PoorOver: CREEK
3.87 MI SOUTH OF LA 323, St. Mary, LA
LA0083
PoorOver: BAYOU CHOUPIQUE
1.28 MI South of LA 182, St. Mary, LA
US0090
PoorOver: RAMOS BAYOU
4.1 MI EAST OF US 90, St. Mary, LA
US0090
PoorOver: BAYOU RAMOS
3.19 Mi E of LA 182, St. Mary, LA
US0090
PoorOver: BAYOU RAMOS
2.5 Mi W. of LA 662, 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.