St. Tammany County, LA
360 public highway bridges
St. Tammany County Bridge Snapshot
St. Tammany County, Louisiana contains 360 public highway bridges in the FHWA National Bridge Inventory. Roughly 29.7% are rated “Good,” 53.1% “Fair,” 5.6% “Poor,” and 5.6% 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 (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.
Related
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |