Ascension County, LA
216 public highway bridges
Ascension County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Ascension County, Louisiana contains 216 public highway bridges. Roughly 40.7% are rated “Good,” 38.4% “Fair,” and 13% “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 (216)
Summerfield Rd
PoorOver: LAKE VILLARS
.9 MI.S.OF PORT VINC, Ascension, LA
Summerfield Rd
PoorOver: LAKE VILLAKS
.9 MI.S.OF PORT VINC, Ascension, LA
K C Rd
PoorOver: BAYOU NARCISSE
2.7 MI NE DUTCHTOWN, Ascension, LA
Boyce Tower Rd
PoorOver: CONWAY BAYOU
0.8 M W of US 61, Ascension, LA
Beco Rd
PoorOver: DUCK ROOST BAYOU
0.1 M N Of LA 429, Ascension, LA
LA0431
PoorOver: BLACK BAYOU
2.16 MI N JCT US 61, Ascension, LA
LA0427
PoorOver: BAYOU MANCHAC
2.1 MI W OF LA 42, Ascension, LA
LA0431
PoorOver: NEW RIVER
1.37 MI NE JCT US 61, Ascension, LA
LA0431
PoorOver: VILLAR DRAINAGE
400 FT S of LA 42, Ascension, LA
LA0621
PoorOver: BLACK BAYOU
0.2 M E of LA 44&LA 621, Ascension, LA
LA0935
PoorOver: BLACK BAYOU
0.9 M W of LA 935&LA 431, Ascension, LA
Henderson Bayou Rd
PoorOver: HENDERSON BAYOU
3.2M WS OF PORT VINCENT, Ascension, LA
E Lanoux Rd
PoorOver: NEW RIVER CANAL
0.2 M N of LA 429, Ascension, LA
Harry Savoy Rd
PoorOver: DRAINAGE BAYOU
.8 MI NE LA 431, LA 621, Ascension, LA
Devall Rd
PoorOver: DRAINAGE BAYOU
1.4 M E OF LA 44, Ascension, LA
LA0928
PoorOver: JIM BAYOU
1.5 miles SW of LA 427, Ascension, 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.