St. Tammany County, LA
360 public highway bridges
St. Tammany County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, St. Tammany County, Louisiana contains 360 public highway bridges. Roughly 29.7% are rated “Good,” 53.1% “Fair,” and 5.6% “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 (360)
US0190
FairOver: BAYOU LACOMBE
0.12 MI NE OF LA 434, St. Tammany, LA
US0190
FairOver: CREEK
2.5 M E OF LA 434, St. Tammany, LA
US0190-B
FairOver: CREEK
1.2 M W OF LA 21, St. Tammany, LA
LA0025
FairOver: DRAIN
1.3 M S OF LA 40, St. Tammany, LA
LA0025
FairOver: BOGUE FALAYA R
LA0025, St. Tammany, LA
Lake Rd
FairOver: LACOMBE BAYOU
1.0M SOUTH OF LA 434, St. Tammany, LA
Magnolia Gardens
FairOver: BRIDGE OVER UNNAMED CREE
1MI.N.OF JCT LA 21 & LA36, St. Tammany, LA
US0190
FairOver: FRENCH BRANCH
US0190, St. Tammany, LA
Honey Island Swamp
FairOver: WOOLY BAYOU
1.4M EAST OF I-59, St. Tammany, LA
LA1077
FairOver: CANAL
2 MILES SOUTH OF LA 22, St. Tammany, LA
I0012
FairOver: PONCHATOLAWA CREEK
0.7 M E OF US 190, St. Tammany, LA
LA0016
FairOver: TALLEYS CREEK
LA0016, St. Tammany, LA
LA0059
FairOver: LITTLE CREEK
0.2 MI N I-12, St. Tammany, LA
LA0435
FairOver: TALISHEEK CREEK
0.3 M S OF LA 41, St. Tammany, LA
LA0435
FairOver: ABITA RIVER
LA 435 @ LOGMI 0.77, St. Tammany, LA
Honey Island Swamp
FairOver: DUCK BAYOU
0.9M EAST OF I-59, St. Tammany, LA
US0190
FairOver: BAYOU LIBERTY
US0190, St. Tammany, LA
LA0025
FairOver: MORGAN BRANCH
0.8 M S OF LA 40, St. Tammany, LA
Honey Island Swamp
FairOver: TILL ED BAYOU
0.3M EAST OF I-59, St. Tammany, LA
Honey Island Swamp
FairOver: DUCK BAYOU
2.22M EAST OF I-59, St. Tammany, LA
Honey Island Swamp
FairOver: WOOLY BAYOU
1.88M EAST OF I-59, St. Tammany, LA
Honey Island Swamp
FairOver: WOOLY BAYOU
1.67M EAST OF I-59, St. Tammany, LA
Honey Island Swamp
FairOver: WOODS BAYOU
2.2M EAST OF I-59, St. Tammany, LA
Honey Island Swamp
FairOver: DUCK BAYOU
0.7M EAST OF I-59, St. Tammany, LA
US0190
FairOver: BIG BRANCH
US0190, St. Tammany, LA
LA0433
FairOver: BAYOU BONFOUCA
LA0433, St. Tammany, LA
TALLOW CREEK BLVD
FairOver: SOAP AND TALLOW BRANCH
.20 MI N OF OLD LA 1085, St. Tammany, LA
Spartan Dr
FairOver: CANAL
0.21 M EAST OF US 11, St. Tammany, LA
US0190
FairOver: BAYOU CASTINE
US0190, St. Tammany, LA
US0190
FairOver: CANE BAYOU
US0190, St. Tammany, LA
US0190
FairOver: BAYOU BONFOUCA
US0190, St. Tammany, LA
CSWY BRIDGE N. B.
FairOver: LAKE PONTCHARTRAIN
CAUSEWAY - NORTH BOUND, St. Tammany, LA
I0012
FairOver: TCHEFUNCTE RIVER
1.1 miles east of LA 21, St. Tammany, LA
CAUSEWAY SB
FairOver: LAKE PONTCHARTRAIN
CAUSEWAY SOUTHBOUND, St. Tammany, LA
I0059
FairOver: MIDDLE SLOUGH
I0059, St. Tammany, LA
I0059
FairOver: RONES BAYOU
I0059, St. Tammany, LA
Kingspoint Blvd.
FairOver: CANAL
1.4 MI EAST OF I10, St. Tammany, LA
Old River Rd
FairOver: BR. OVER DOUBLOUN BRANCH
N. 190 ON OLD RIVER RD, St. Tammany, LA
Fish Hatchery Rd
FairOver: CREEK
0.65 N.OF LA.1093-1, St. Tammany, LA
I0059
FairOver: MIDDLE SLOUGH
I0059, St. Tammany, LA
I0059
FairOver: DRY BAYOU
I0059, St. Tammany, LA
I0059
FairOver: INDIAN BAYOU
I0059, St. Tammany, LA
I0059
FairOver: CLEAR BAYOU
I0059, St. Tammany, LA
I0059
FairOver: RONES BAYOU
I0059, St. Tammany, LA
Bayou Pacquet
FairOver: BAYOU PAQUET
5.2 MI. W. OF LA 433, St. Tammany, LA
Belle Terre Blvd.
FairOver: DRAIN
0.8 Mi W US190 Frontage R, St. Tammany, LA
LA1077
FairOver: COWPEN BRANCH
2.60 MILES EAST OF LA. 10, St. Tammany, LA
ORMOND DRIVE
FairOver: GUM BAYOU
0.65 MI EAST OF LA 1090, St. Tammany, LA
US0190
FairOver: SLOUGH
2.1 M E OF LA 1077, St. Tammany, LA
US0190
FairOver: CREEK
2.3 M E OF LA 1077, St. Tammany, LA
Read our methodology - how this data is sourced, computed, and verified.
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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.