Total Bridges
12,698
Public highway bridges in Louisiana
State profile · Above median Poor share
Louisiana bridge safety
According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Louisiana.
- 12,698
- Public bridges
- 38.7%
- Good condition
- 11.5%
- Poor condition
Louisiana holds 12,698 public highway bridges (#24 of 52 by inventory) with a 11.48% Poor share (#8 of 52 by Poor share).
That is 11.5% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 45 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.
Inventory: FHWA NBI 2024 · last ETL August 2026
Good Condition
38.7%
4,919 bridges rated 7-9
-11.3pp vs 50% benchmark
Poor Condition
11.5%
1,458 bridges whose lowest applicable component is rated 0-4
4.0pp vs national avg 7.5%
Louisiana vs national bridge condition
Louisiana - Good condition share 38.7%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Louisiana - Poor-condition share 38.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.
Louisiana in the national condition pattern
Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.
Louisiana vs all states by public bridge inventory
Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges
12,698 24th of 54 higher than 30 of 54 states
States and territories, banded by public bridge inventory size
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · 2024
Read the rank neighborhood for Louisiana
The highlighted point is Louisiana: 12,698 bridges and 11.48% in Poor condition, rank #45 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Louisiana on that same Poor-share ordering:
- North Dakota: 4,255 bridges · 10.98% Poor
- Michigan: 11,371 bridges · 11.27% Poor
- Louisiana: 12,698 bridges · 11.48% Poor
- Pennsylvania: 23,299 bridges · 12.58% Poor
- Guam: 47 bridges · 12.77% Poor
The full national sortable table lives on the rankings page.
Material families in Louisiana
Exclusive FHWA material families across all 12,698 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.
Who maintains Louisiana’s inventory
State agency holds 61.0% of the 12,698 public highway bridges filed under Louisiana in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.
When Louisiana’s bridges were built
Pre-1950 construction accounts for 4.2% of the 12,698 bridges with a recorded original year in Louisiana. Era bands are orthogonal to the Poor-share ranking above.
Condition Distribution
Counties (64)
Acadia 282 Allen 178 Ascension 216 Assumption 68 Avoyelles 147 Beauregard 221 Bienville 190 Bossier 270 Caddo 682 Calcasieu 463 Caldwell 124 Cameron 58 Catahoula 70 Claiborne 148 Concordia 42 De Soto 201 East Baton Rouge 548 East Carroll 55 East Feliciana 133 Evangeline 156 Franklin 131 Grant 209 Iberia 143 Iberville 80 Jackson 163 Jefferson 379 Jefferson Davis 240 LaSalle 195 Lafayette 322 Lafourche 130 Lincoln 171 Livingston 253 Madison 104 Morehouse 136 Natchitoches 313 Orleans 382 Ouachita 337 Plaquemines 34 Pointe Coupee 50 Rapides 523 Red River 63 Richland 207 Sabine 195 St. Bernard 47 St. Charles 82 St. Helena 139 St. James 26 St. John the Baptist 40 St. Landry 317 St. Martin 116 St. Mary 124 St. Tammany 360 Tangipahoa 477 Tensas 52 Terrebonne 215 Union 121 Vermilion 261 Vernon 341 Washington 285 Webster 194 West Baton Rouge 73 West Carroll 88 West Feliciana 108 Winn 220
Louisiana vs nearby ranks
Adjacent states by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Louisiana on the same metric.
ND
North Dakota
10.98% top marginal rate
MI
Michigan
11.27% top marginal rate
LA
Louisiana
11.48% top marginal rate
PA
Pennsylvania
12.58% top marginal rate
GU
Guam
12.77% top marginal rate
Bridges Needing Most Attention in Louisiana
Six lowest-condition bridges in Louisiana, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
Avenue E
PoorOver: DRESSER CANAL
0.10 MI WEST OF LA 1, Lafourche, LA
Built 1952 Load: 0.0 t
VALENTINE BRIDGE R
PoorOver: LAFOURCHE BAYOU
0.01 MI N OF LA 1, Lafourche, LA
Built 1969 Load: 0.0 t
UNNAMED RD
PoorOver: I-10
3.1 MI EAST OF I-510, Orleans, LA
Built 1969 Load: 0.0 t ADT: 28,550
UNNAMED RD
PoorOver: I-10
4.5 MI EAST OF I-510, Orleans, LA
Built 1969 Load: 0.0 t ADT: 28,550
Almonaster Ave
PoorOver: INNER HARBOR NAVIGATION
0.01 MI E OF FRANCE RD, Orleans, LA
Built 1919 Load: 0.0 t
Beiber Rd
PoorOver: NEZPIQUE BAYOU
3.65 Mi W of La 1160, Evangeline, LA
Built 1965 Load: 0.0 t ADT: 70
All Bridges in Louisiana
Old Athens Rd
FairOver: FLAT LICK CREEK
4.54 M NORTH OF LA 518, Claiborne, LA
Built 1990 Load: 36.6 t ADT: 380
Funsten Rd
FairOver: CASTOR BAYOU
1.7 MI E OF LA 5, De Soto, LA
Built 1984 Load: 36.6 t ADT: 40
West St
FairOver: MILE CREEK
0.4 MI W OF HWY 79-8, Webster, LA
Built 1930 Load: 36.6 t ADT: 4,200
Bounds Rd
FairOver: BRUSHY CREEK
0.2 MI. W. OF US 371, Webster, LA
Built 1999 Load: 36.6 t ADT: 111
LANESFERRY RD
FairOver: LOGGY BAYOU
9MI W OF LAKE PROVI, East Carroll, LA
Built 1984 Load: 36.6 t ADT: 150
CHATHAM CEM RD
FairOver: CASTOR CREEK
1.7 MI. NE INT. 455, Jackson, LA
Built 1984 Load: 36.6 t ADT: 125
LA0830-2
FairOver: CREEK
.44 MI NORTH OF US 425, Morehouse, LA
Built 1994 Load: 36.6 t ADT: 1,291
FRANK BELL RD
FairOver: BAYOU GALION
5.4 MI. E. INT. 396, Morehouse, LA
Built 1983 Load: 36.6 t ADT: 70
DEHLCO RD
FairOver: BEE BAYOU
1.6 MI E of LA 425, Richland, LA
Built 1993 Load: 36.6 t ADT: 100
REEDS BRIDGE RD
FairOver: CALCASIEU RIVER
1.7 MILES WEST OF US 165, Allen, LA
Built 2011 Load: 36.6 t ADT: 132
OLD PUMP RD
FairOver: CALCASIEU RIVER RELIEF
0.6 MI. W. OF CHAPPEL RD, Allen, LA
Built 1985 Load: 36.6 t ADT: 581
OLD PUMP RD
FairOver: CALCASIEU RIVER RELIEF
0.8 MI. W. OF CHAPPEL RD, Allen, LA
Built 1985 Load: 36.6 t ADT: 581
COTTONGIN CASTOR
FairOver: MITCHELL CREEK
0.4 MI E OF HEBERT RD., Allen, LA
Built 1985 Load: 36.6 t ADT: 131
BURGESS RD
FairOver: FLAT CREEK
3.5 MI SW OF LA 26, Allen, LA
Built 1992 Load: 36.6 t ADT: 30
DAVE SMITH RD
FairOver: BOTTOM CREEK
1.2 MI SW OF LA 26, Allen, LA
Built 1993 Load: 36.6 t ADT: 291
WARD RD
FairOver: MITCHELL CREEK
1.6 MI EAST OF LA 372, Allen, LA
Built 1985 Load: 36.6 t ADT: 358
REEDS BRIDGE RD
FairOver: CALCASIEU RIVER RELIEF
1.66 MI. W. OF US 165, Allen, LA
Built 1983 Load: 36.6 t ADT: 132
TRAMEL RD
FairOver: FLAT CREEK
1.2 MI WEST OF LA 26, Allen, LA
Built 1990 Load: 36.6 t ADT: 80
CYPRESS CREEK RD
FairOver: BEAVER CREEK
0.30 MI. N. OF LA 10, Allen, LA
Built 1984 Load: 36.6 t ADT: 533
TOM JEFF RD
FairOver: TEN MILE CREEK
1.8 MI EAST OF LA 377, Allen, LA
Built 1984 Load: 36.6 t ADT: 180
LONGVILLE RD
FairOver: CREEK
1.2 MI WEST OF LA 113, Beauregard, LA
Built 1984 Load: 36.6 t ADT: 70
MORROW BRIDGE RD
FairOver: TRIGGER BRANCH
1.5 MI E. of LA 113, Beauregard, LA
Built 1984 Load: 36.6 t ADT: 120
FABACHER RD
FairOver: CANAL
0.7 MI S of US 90, Calcasieu, LA
Built 1990 Load: 36.6 t ADT: 146
HICKORY BRANCH RD
FairOver: INDIAN BAYOU
1 MI W OF N PERKINS FERRY, Calcasieu, LA
Built 1991 Load: 36.6 t ADT: 585
BELLARD ROAD
FairOver: EAST BAYOU LACASSINE
0.8 M W of LA 99, Jefferson Davis, LA
Built 1988 Load: 36.6 t ADT: 70
KOLL ROAD
FairOver: GUM GULLY
0.8 MI E. OF FARM SUP RD, Jefferson Davis, LA
Built 1999 Load: 36.6 t ADT: 200
ROSTROM ROAD
FairOver: GULLY
0.4 MI N of ESTES RD, Jefferson Davis, LA
Built 1977 Load: 36.6 t ADT: 90
Beluah
FairOver: DUGDEMONA RIVER
2.73 MI. NW OF LA 1230, Winn, LA
Built 1984 Load: 36.6 t ADT: 291
Germany Rd
FairOver: BAYOU BLACK
2.8 MI. S. LITTLE PRAIRIE, Ascension, LA
Built 2000 Load: 36.6 t ADT: 750
MALL OF LA BLVD
FairOver: WARD CREEK
.6 MI E OF BLUEBONNET, East Baton Rouge, LA
Built 2006 Load: 36.6 t ADT: 8,340
LA0437
FairOver: BOGUE FALAYA RIVER
1.35 MILES NORTH US 190, St. Tammany, LA
Built 2003 Load: 36.6 t ADT: 4,871
Daney St
FairOver: STREET OVER W-14 CANAL
0.3 MILE E. OF 3RD STREET, St. Tammany, LA
Built 1984 Load: 36.6 t ADT: 10
W. Dubuisson
FairOver: TRIBUTARY TO LIBERTY BAY
LA 433-E REILEY RD .93 MI, St. Tammany, LA
Built 1986 Load: 36.6 t ADT: 229
Military Rd
FairOver: PUSHEPATAPA CREEK
1.8 MI. W OF HWY 21, Washington, LA
Built 1998 Load: 36.6 t ADT: 340
Angus Rd.
FairOver: JOE MARCEL BAYOU
1.80 Mi W of La 29, Evangeline, LA
Built 1984 Load: 36.9 t ADT: 65
Maryview Farm Rd
FairOver: MANOR PARK COULEE
1.15 Mi NE of I-10, Lafayette, LA
Built 1986 Load: 36.9 t ADT: 340
St. Claire Rd.
FairOver: ST. CLAIR BAYOU
1.4 Mi W of Sawmill Hwy, Lafayette, LA
Built 1986 Load: 36.9 t ADT: 720
Camp Zion Rd
FairOver: Clarke Bayou
2.5 MI EAST OF LA 157, Bossier, LA
Built 1985 Load: 36.9 t ADT: 500
LA0526
FairOver: DRAINAGE CANAL
2.43 MI N OF JCT LA3132, Caddo, LA
Built 1978 Load: 36.9 t ADT: 19,314
LA0526
FairOver: DRAINAGE CANAL
2.43 MI N OF JCT LA 3132, Caddo, LA
Built 1978 Load: 36.9 t ADT: 19,314
Friendship Rd
FairOver: MCCASLAND CREEK
6.0 MI S. OF LA 9, Claiborne, LA
Built 1998 Load: 36.9 t ADT: 100
SCHROCK RD
FairOver: BUCK BAYOU
1.0 MI E OF BAYOU MACON, East Carroll, LA
Built 1987 Load: 36.9 t ADT: 130
LA0146
FairOver: SUGAR CREEK
3.13 MILES WEST OF LA 545, Lincoln, LA
Built 2011 Load: 36.9 t ADT: 1,360
PRAIRIE DEBUTTE RD
FairOver: BAYOU DEBUTTE
0.7 MI W of LA 593, Morehouse, LA
Built 1997 Load: 36.9 t ADT: 180
LA0557
FairOver: BAYOU LAPINE
1.09 MI SOUTH OF LA 34, Ouachita, LA
Built 2002 Load: 36.9 t ADT: 3,528
RED CUT RD
FairOver: DRAIN INTO LAPINE BAYOU
.3 MI NE INT. 63, Ouachita, LA
Built 1985 Load: 36.9 t ADT: 354
US0167
FairOver: CREEK
1.0 MI. S OF LA 9, Union, LA
Built 2012 Load: 36.9 t ADT: 422
Leggitt Crossing
FairOver: LYON BAYOU
0.8 MI E of LA 588, West Carroll, LA
Built 1997 Load: 36.9 t ADT: 425
WALKER RD
FairOver: CREEK
1.6 MI NORTH OF US 190, Allen, LA
Built 1997 Load: 36.9 t ADT: 150
COTTONGIN CASTOR
FairOver: BLUE BAYOU
0.8 MI E OF DARBORNE LN, Allen, LA
Built 1999 Load: 36.9 t ADT: 180
Showing 4,351-4,400 of 12,698 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
What to do with this
Use Louisiana's inventory picture to drill to a county or a specific span.
- Browse counties in Louisiana and open the highest-Poor shares first. County list
- See where this state sits among peers on Poor-condition share. State rankings
- Compare this state with another jurisdiction on the same measures. State compare
NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Louisiana Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.