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)
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
LA0182
PoorOver: CHARENTON
1.1 Miles South of LA 83, St. Mary, LA
LA0083
PoorOver: BAYOU CHOUPIQUE
1.28 MI South of LA 182, 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
LA0324
Structurally DeficientOver: BAYOU TECHE
0.1 MI WEST OF LA 326, St. Mary, LA
LA0182
Structurally DeficientOver: ATCHAF.R/BERWICK BAY
1.4 MI WEST OF US 90, St. Mary, LA
LA0087
Structurally DeficientOver: CREEK
3.87 MI SOUTH OF LA 323, St. Mary, LA
US0090
Structurally DeficientOver: RAMOS BAYOU
4.1 MI EAST OF US 90, 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 |