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
Ridge RD.
PoorOver: INDIAN BAYOU (SPOIL BANK
0.65 Mi E of LA 343, Lafayette, LA
Built 1987 Load: 49.0 t ADT: 2,790
US0190
PoorOver: US190B/LA21/Bouge Falaya
US0190, St. Tammany, LA
Built 1958 Load: 49.9 t ADT: 28,900
I0020
PoorOver: CROWS CR RELIEF
0.30M EAST OF WEBSTER PH, Bienville, LA
Built 1960 Load: 51.7 t ADT: 37,514
LA0617
PoorOver: LA 617 OVER I-20
LA 617 OVER I-20, Ouachita, LA
Built 1986 Load: 51.7 t ADT: 31,200
LA0122
PoorOver: CREEK
4.2 M E OF E JCT LA 471, Grant, LA
Built 1988 Load: 53.8 t ADT: 683
LA0163
PoorOver: CLARKE BAYOU
.8 MI WEST OF LA 527, Webster, LA
Built 1984 Load: 57.2 t ADT: 2,091
LA0109
PoorOver: DRAIN
2.3 MI W OF LA 27, Beauregard, LA
Built 1963 Load: 58.0 t ADT: 674
LA0928
PoorOver: JIM BAYOU
1.5 miles SW of LA 427, Ascension, LA
Built 1966 Load: 58.0 t ADT: 5,446
US0190
PoorOver: DRAIN
4.3 MI E. OF LA 111, Beauregard, LA
Built 1964 Load: 61.2 t ADT: 4,254
PRICE RD
PoorOver: LEE CREEK
.5 MI S. INT. 195, Union, LA
Built 1994 Load: 61.6 t ADT: 32
Dorcheat Rd
PoorOver: COW BRANCH
6 MI N OF HWY 79-80, Webster, LA
Built 1971 Load: 68.4 t ADT: 833
US0190
PoorOver: CREEK
1.1 M N OF LA 37, East Baton Rouge, LA
Built 1960 Load: 68.4 t ADT: 44,391
LA0039
PoorOver: LA 39 OVER RR CANAL
LA 39 AT RR CANAL, St. Bernard, LA
Built 1991 Load: 74.5 t ADT: 47,739
NORTH ST
PoorOver: CHACAHOULA CANAL
0.01M W OF DEADWOOD RD, Terrebonne, LA
Built 2011 Load: 74.5 t ADT: 135
LA0013
PoorOver: CREEK
.01 MI SOUTH OF LA 365, Acadia, LA
Built 1960 Load: 74.5 t ADT: 5,915
Connie Rd.
PoorOver: COULEE
1.1 Mi. East of La 1120, Acadia, LA
Built 1986 Load: 74.5 t ADT: 24
LA0093
PoorOver: Bayou ILL Des Cannes
1.67 Mi N of LA 342, Lafayette, LA
Built 1956 Load: 74.5 t ADT: 8,559
LA0178
PoorOver: DRAINAGE CANAL
1.3 MI E of LA 357, St. Landry, LA
Built 1963 Load: 74.5 t ADT: 1,619
Sanders Rd
PoorOver: TRIBUTARY TO CROWS CREEK
1.21 MI E OF US 79, Claiborne, LA
Built 1984 Load: 74.5 t ADT: 150
SAN HILL RD
PoorOver: RED ROCK BRANCH
1.2 MI E. OF HWY 159, Webster, LA
Built 1986 Load: 74.5 t ADT: 268
Machen St
PoorOver: LITTLE CROOKED CREEK
0.27 MI EAST OF LA 157, Webster, LA
Built 1988 Load: 74.5 t ADT: 1,500
HODGE RD
PoorOver: CYPRESS BAYOU
3 MI SW MOUND, Madison, LA
Built 1984 Load: 74.5 t ADT: 142
WHITE OAK LANDING
PoorOver: EDMONDS CREEK
.03 MI. N. INT. 088, Union, LA
Built 1984 Load: 74.5 t ADT: 135
PILGRIM REST CH RD
PoorOver: STEEP BANK CREEK
1.7 MI. NW INT. 209, Union, LA
Built 1983 Load: 74.5 t ADT: 366
LA0588
PoorOver: BOGGY BAYOU
2.59 MI W of LA 17, West Carroll, LA
Built 1983 Load: 74.5 t ADT: 340
LA1151
PoorOver: DRAIN
2.0 W of US 165, Allen, LA
Built 1965 Load: 74.5 t ADT: 482
US0190
PoorOver: DRAIN
1.3 MI WEST OF LA 3226, Beauregard, LA
Built 1964 Load: 74.5 t ADT: 3,187
US0190
PoorOver: DRAIN
2.0 MI EAST OF LA 3226, Beauregard, LA
Built 1964 Load: 74.5 t ADT: 18,056
LA0112
PoorOver: DRAIN
2.3 MI E OF LA 113, Beauregard, LA
Built 1962 Load: 74.5 t ADT: 759
LA0109
PoorOver: HURRICANE CREEK
5.0 MI SW OF LA 389, Beauregard, LA
Built 1962 Load: 74.5 t ADT: 750
LA0109
PoorOver: DRAIN
2.0 MI N OF LA 389, Beauregard, LA
Built 1963 Load: 74.5 t ADT: 1,749
LA0109
PoorOver: DRAIN
3.3 MI N OF LA 389, Beauregard, LA
Built 1963 Load: 74.5 t ADT: 1,749
E. GAUTHIER RD
PoorOver: CREEK
0.6 MI W of LA 397, Calcasieu, LA
Built 1986 Load: 74.5 t ADT: 1,349
LA0487
PoorOver: BRUSHY BAYOU
1.7 M S OF AJAX, Natchitoches, LA
Built 1989 Load: 74.5 t ADT: 968
LA0119
PoorOver: CREEK
3.67 MI. NORTH OF LA 8, Natchitoches, LA
Built 1972 Load: 74.5 t ADT: 189
I0049
PoorOver: BAYOU DERBONNE
0.69 MILES NORTH OF LA 11, Natchitoches, LA
Built 1986 Load: 74.5 t ADT: 18,305
I0049
PoorOver: BAYOU LACARP
2.68 MI NORTH OF LA 119, Natchitoches, LA
Built 1986 Load: 74.5 t ADT: 18,305
Donahue Ferry Rd
PoorOver: BAYOU MARIA
0.25 MI. EAST OF LA 3144, Rapides, LA
Built 1993 Load: 74.5 t ADT: 3,220
HOLLY GROVE RD
PoorOver: FRANKLIN BRANCH
0.25 M. W. OF JCT. US 171, Vernon, LA
Built 1983 Load: 74.5 t ADT: 120
LA0126
PoorOver: CYPRESS CREEK
1.2 MILES EAST OF LA 505, Winn, LA
Built 1990 Load: 74.5 t ADT: 527
LA0126
PoorOver: SPRING CREEK
4.57 MILES EAST OF LA 127, Winn, LA
Built 1985 Load: 74.5 t ADT: 385
LA0126
PoorOver: BOZEMAN BRANCH
6.48 MILES EAST OF LA 127, Winn, LA
Built 1985 Load: 74.5 t ADT: 349
LA9873
PoorOver: DRAINAGE CANAL
2.1 MILES EAST OF HWY 415, West Baton Rouge, LA
Built 1962 Load: 74.5 t ADT: 1,725
Duff Rd
PoorOver: PIPE OVER BEAVER BRANCH
4 MI NW OF LA 447 EXIT, Livingston, LA
Built 1985 Load: 74.5 t ADT: 800
N. Wllie Rd
PoorOver: DRAINAGE DITCH
2.2 M NORTH OF LA 1077, St. Tammany, LA
Built 1990 Load: 74.5 t ADT: 2,255
WILLIAMS STREET
PoorOver: DRAINAGE TO ZOURIE BAYOU
NEAR PENDLETON DR, Vernon, LA
Built 1980 Load: 79.1 t ADT: 300
N. HOLLYWOOD RD
PoorOver: DRAIN CANAL
0.6 MI. W. OF LA 182, Terrebonne, LA
Built 1965 Load: 97.2 t ADT: 13,934
BRADY BRIDGE RD
PoorOver: DU LARGE BAYOU
0.01 MI W OF LA 315, Terrebonne, LA
Built 1960 Load: 99.9 t ADT: 700
Showing 12,651-12,698 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.