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
LA1026
PoorOver: CREEK
1.6 M SW OF LA 16, Livingston, LA
Built 1961 Load: 11.0 t ADT: 8,669
Kings Dr
PoorOver: ALLEN BAYOU
PLANTATION ESTATES, Livingston, LA
Built 1988 Load: 11.0 t ADT: 450
Lock # 3 Rd
PoorOver: CREEK
RT 778 1.55 MI E OF, St. Tammany, LA
Built 1960 Load: 11.0 t ADT: 100
Oak Ridge Park Rd
PoorOver: CANAL
0.5M WEST OF LA 1, Lafourche, LA
Built 1981 Load: 11.3 t ADT: 81
MARTIN LN
PoorOver: DRAINAGE CANAL
0.2 MI SOUTH OF HWY 23, Plaquemines, LA
Built 1987 Load: 11.3 t
LA3116
PoorOver: CREEK
0.2 mi N. of LA 3123, Acadia, LA
Built 1953 Load: 11.3 t ADT: 654
Redbird Rd.
PoorOver: Coulee
1.1 Mi. S. of Istre Rd, Acadia, LA
Built 1965 Load: 11.3 t ADT: 24
LA0671
PoorOver: BAYOU TECHE JEAN.
0.16 MI EAST OF LA 182, Iberia, LA
Built 1944 Load: 11.3 t ADT: 496
US0080
PoorOver: SLOUGH BRIDGE
0.6 MI EAST OF LA 154, Bienville, LA
Built 1953 Load: 11.3 t ADT: 780
LA0516
PoorOver: POLAND BRANCH
4.4 MI EAST OF LA 792, Bienville, LA
Built 1961 Load: 11.3 t ADT: 177
Palmetto Ave
PoorOver: Lil Cypress Bayou
0.6 MI E OF HWY 3, Bossier, LA
Built 1965 Load: 11.3 t ADT: 3,000
LA0169
PoorOver: S FORK CROSS B
.6 MI NORTH OF I-20, Caddo, LA
Built 1965 Load: 11.3 t ADT: 2,397
LA0159
PoorOver: CYPRESS CR RELIEF
3.5 MI NORTH OF LA 615, Webster, LA
Built 1966 Load: 11.3 t ADT: 866
HARRISON/COLLIER
PoorOver: CONCRETE CANAL
W1 BLOCK FROM POWELL AVE., Ouachita, LA
Built 1961 Load: 11.3 t
LA1156
PoorOver: MILL CREEK
0.9 MI E of LA 112, Allen, LA
Built 1966 Load: 11.3 t ADT: 550
CARL MCCALL RD.
PoorOver: PORTIE BAYOU
0.5 MI. N. OF LA 82, Cameron, LA
Built 1967 Load: 11.3 t ADT: 156
LYONS RD
PoorOver: BAYOU CHENE
0.7 MI S of LA 1126, Jefferson Davis, LA
Built 1978 Load: 11.3 t ADT: 80
WEST RACCA ROAD
PoorOver: EAST GRAND MARAIS DITCH
1.7 MI W of LA 26, Jefferson Davis, LA
Built 1979 Load: 11.3 t ADT: 50
LA0119
PoorOver: CREEK
0.40 MILES NORTH OF LA 8, Natchitoches, LA
Built 1971 Load: 11.3 t ADT: 189
LA0474
PoorOver: MIDKIFF CREEK
7.57 MI EAST OF LA 191, Sabine, LA
Built 1958 Load: 11.3 t ADT: 1,105
JEAN ST
PoorOver: CASTOR BAYOU TRIB.
1.2 MILES WEST OF US 171, Vernon, LA
Built 1970 Load: 11.3 t ADT: 3,600
US0084
PoorOver: M P R/R
.91 MI EAST OF US 165, LaSalle, LA
Built 1932 Load: 11.3 t ADT: 1,473
Como Rd
PoorOver: POLLY CREEK
2.2 MI.SW LA66 LA968 JCT, West Feliciana, LA
Built 1982 Load: 11.3 t ADT: 30
Ginny Ln
PoorOver: BLOOD RIVER
0.70 MILES SOUTH OF LA.42, Livingston, LA
Built 1995 Load: 11.3 t ADT: 8
Meadow Ln
PoorOver: SPILLERS CREEK
0.4 Miles South of LA 16, Livingston, LA
Built 1995 Load: 11.3 t ADT: 352
Beach Rd
PoorOver: CREEK
.9 MI SW OF JCT 445, Tangipahoa, LA
Built 1960 Load: 11.3 t ADT: 16
CLYDE SMITH RD
PoorOver: CREEK
0.2 MI. N. OF HWY. 4, Washington, LA
Built 1970 Load: 11.3 t ADT: 315
LINWOOD AVE
PoorOver: KCS MOPAC & PAC RRS
0.1 MI. SO. OF U.S. 80, Caddo, LA
Built 1950 Load: 11.7 t ADT: 22,308
LA0134
PoorOver: MILL BAYOU
2.0 MI EAST OF LA 136, Ouachita, LA
Built 1957 Load: 11.7 t ADT: 3,462
LA0589
PoorOver: ALLIGATOR BAYOU
.6 MI EAST OF LA 17, West Carroll, LA
Built 1957 Load: 11.7 t ADT: 233
LA3256
PoorOver: ENGLISH BAYOU
.74 MI NORTH OF US 90, Calcasieu, LA
Built 1969 Load: 11.7 t ADT: 1,062
Government Rd
PoorOver: CYPRESS CR.
0.86 M. E. OF LA 153 NEAR, Natchitoches, LA
Built 1965 Load: 11.7 t ADT: 152
LAKESIDE LOOP
PoorOver: YOCUM CREEK
APP. 2.75 M. W. OF LA 191, Sabine, LA
Built 1967 Load: 11.7 t ADT: 110
Fraternity St
PoorOver: MONTE SANO BAYOU
.5 MI N. OF SCOTLANDVILLE, East Baton Rouge, LA
Built 1982 Load: 11.7 t ADT: 553
Ave G
PoorOver: ROADSIDE DITCH
7 W OF LA 19, East Baton Rouge, LA
Built 1978 Load: 11.7 t ADT: 350
US0090
PoorOver: WEST MIDDLE RIVER
1.9 mi NE of US 190, St. Tammany, LA
Built 1933 Load: 11.7 t ADT: 1,215
Chappepeela Rd
PoorOver: BRUSHY BRANCH
2 MI.NE.OF JCT.1064, Tangipahoa, LA
Built 1974 Load: 11.7 t ADT: 1,520
W. P. Stewart
PoorOver: LEES CREEK
1.5 MI. W OF 1075, Washington, LA
Built 1970 Load: 11.7 t ADT: 430
J. W. Riles Rd
PoorOver: DEER LICK CR.
1.3 MI. SW. OF LA 38, Washington, LA
Built 1983 Load: 11.7 t ADT: 415
LA1123
PoorOver: CREEK
2.23 MI WEST OF LA 98, Acadia, LA
Built 1954 Load: 11.8 t ADT: 134
Istre Rd
PoorOver: Lazy Point Canal
1.1 Mi. W. of La 92, Acadia, LA
Built 1965 Load: 11.8 t ADT: 96
LA0343
PoorOver: INDIAN BAYOU
0.2 MI NORTH OF LA 342, Lafayette, LA
Built 1957 Load: 11.8 t ADT: 3,757
RIVER RD
PoorOver: PRAIRION BAYOU
6.22 MI SE of LA 557, Ouachita, LA
Built 1968 Load: 11.8 t ADT: 75
HULL GEORGE RD
PoorOver: ROGERS CREEK
2 MI SE OKALOOSA, Ouachita, LA
Built 1960 Load: 11.8 t ADT: 56
Bordelon Crossing
PoorOver: BAYOU ROUGE
4 MI. SOUTH OF EVERG, Avoyelles, LA
Built 1950 Load: 11.8 t ADT: 80
LA0485
PoorOver: LITTLE RIVER
1.53 MI N OF JCT LA 1222, Natchitoches, LA
Built 1956 Load: 11.8 t ADT: 508
LA0399
PoorOver: CREEK
.55 MI NORTH OF LA 458, Vernon, LA
Built 1964 Load: 11.8 t ADT: 396
LA0501
PoorOver: MEDENHAUSE CREEK
1.62 MI SOUTH OF LA 156, Winn, LA
Built 1975 Load: 11.8 t ADT: 1,026
LA0506
PoorOver: CASTOR RELIEF
7.3 MI WEST OF US 165, Caldwell, LA
Built 1931 Load: 11.8 t ADT: 306
LA0506
PoorOver: CASTOR RELIEF
6.8 MI WEST OF US 165, Caldwell, LA
Built 1931 Load: 11.8 t ADT: 306
Showing 11,551-11,600 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.