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
LA0846
GoodOver: CREEK
5.7 MI N OF LA 4, Caldwell, LA
Built 1982 Load: 39.0 t ADT: 650
LA0849
GoodOver: BRIDGE CREEK
0.74 M E of LA 126, Caldwell, LA
Built 1983 Load: 39.0 t ADT: 739
LA0124
GoodOver: SLOUGH
0.7 MI N OF LA 8, Catahoula, LA
Built 1977 Load: 39.0 t ADT: 1,706
LA0126
GoodOver: FORDS CREEK
6.6 MI SOUTH OF LA 459, Catahoula, LA
Built 1983 Load: 39.0 t ADT: 544
LA0126
GoodOver: BENS CREEK
1.48 M N of LA 8, Catahoula, LA
Built 1983 Load: 39.0 t ADT: 544
LA0923
GoodOver: CREEK
2.2 MI NORTH OF LA 126, Catahoula, LA
Built 1979 Load: 39.0 t ADT: 550
LA0129
GoodOver: WILD COW BAYOU
3.8 MI NORTH OF LA 909, Concordia, LA
Built 1989 Load: 39.0 t ADT: 68
LA0004
GoodOver: SANDY BAYOU
1.75 M E of LA 572, Franklin, LA
Built 1993 Load: 39.0 t ADT: 1,082
LA0130
GoodOver: ASH SLOUGH
.23 MI WEST OF LA 15, Franklin, LA
Built 1980 Load: 39.0 t ADT: 7,372
LA0128
GoodOver: Deer Creek
1.2 MI EAST OF LA 15, Franklin, LA
Built 1981 Load: 39.0 t ADT: 906
LA0577
GoodOver: DEER CREEK
1.60 M E of LA 15, Franklin, LA
Built 1985 Load: 39.0 t ADT: 977
US0084
GoodOver: MILL POND CREEK
.4 MI EAST OF LA 772, LaSalle, LA
Built 1993 Load: 39.0 t ADT: 3,620
LA0772
GoodOver: CREEK
.7 MI EAST OF US 84, LaSalle, LA
Built 1978 Load: 39.0 t ADT: 116
LA0124
GoodOver: CRREK
2.0 MI EAST OF US 165, LaSalle, LA
Built 1980 Load: 39.0 t ADT: 1,838
LA0500
GoodOver: CREEK
1.7 MI WEST OF US 84, LaSalle, LA
Built 1989 Load: 39.0 t ADT: 1,008
LA0127
GoodOver: DEVILS CREEK
0.6 MI SOUTH OF LA 777, LaSalle, LA
Built 1997 Load: 39.0 t ADT: 1,675
LA0460
GoodOver: HICKORY BRANCH
2.8 MI EAST OF LA 127, LaSalle, LA
Built 1978 Load: 39.0 t ADT: 776
LA0460
GoodOver: CREEK
3.2 MI EAST OF LA 127, LaSalle, LA
Built 1980 Load: 39.0 t ADT: 776
LA0459
GoodOver: SALEM CREEK
8.3 MI NORTH OS US 84, LaSalle, LA
Built 1979 Load: 39.0 t ADT: 1,160
LA0773
GoodOver: CREEK
2.4 MI NORTH OF LA 774, LaSalle, LA
Built 1981 Load: 39.0 t ADT: 1,537
LA3071
GoodOver: CREEK
1.15 MI EAST OF LA 503, LaSalle, LA
Built 1979 Load: 39.0 t ADT: 429
LA0896
GoodOver: LAKE ST PETER DR CANAL
.67 MI WEST OF LA 568, Tensas, LA
Built 1979 Load: 39.0 t ADT: 88
LA0605
GoodOver: CLARK BAYOU
4.8 MI EAST OF US 65, Tensas, LA
Built 1984 Load: 39.0 t ADT: 499
LA0064
GoodOver: BATON ROUGE BAYOU
EAST OF US 61, East Baton Rouge, LA
Built 1993 Load: 39.0 t ADT: 9,464
BURBANK DR
GoodOver: BAYOU FOUNTAIN
0.1M SOUTH OF HIGHLAND RD, East Baton Rouge, LA
Built 1982 Load: 39.0 t ADT: 18,800
I0110
GoodOver: CANAL
0.05 M SE of I-110&LA 408, East Baton Rouge, LA
Built 1976 Load: 39.0 t ADT: 8,250
SIEGEN LN
GoodOver: SER. RD WARDS CREEK RR
0.5 Mi. E. of LA 42, East Baton Rouge, LA
Built 1994 Load: 39.0 t ADT: 437
Summers Rd
GoodOver: BEAVER BAYOU
0.02 MI. E. SULLIVAN RD., East Baton Rouge, LA
Built 2001 Load: 39.0 t ADT: 20
US0190
GoodOver: BAYOU CHOLPE
2.95 MI W. OF WBR PH LINE, Pointe Coupee, LA
Built 1996 Load: 39.0 t ADT: 20,176
US0190
GoodOver: BAYOU CHOLPE
2.95MI.W.OF W.B.R. PAR.LN, Pointe Coupee, LA
Built 1996 Load: 39.0 t ADT: 14,467
LA1036
GoodOver: EAST HOG BRANCH
2.8 M NW OF LA 442, Livingston, LA
Built 1980 Load: 39.0 t ADT: 601
I0055
GoodOver: I-55 NORTH OFF RAMP RUDC
0.1 M W OF US 51, St. John the Baptist, LA
Built 1975 Load: 39.0 t ADT: 187
I0055
GoodOver: I-55 NORTH ON RAMP RUDDC
0.1 M W OF US 51, St. John the Baptist, LA
Built 1975 Load: 39.0 t ADT: 8,115
I0055
GoodOver: SWAMP
0.1 M W OF US 51, St. John the Baptist, LA
Built 1975 Load: 39.0 t ADT: 28,021
I0012
GoodOver: DONYA ST/CANAL
I0012, St. Tammany, LA
Built 1970 Load: 39.0 t ADT: 78,215
I0012
GoodOver: I-12 OVER PAR RD ROLLINS
0.9 M W OF US 11, St. Tammany, LA
Built 1970 Load: 39.0 t ADT: 29,236
LA0038
GoodOver: SLOUGH
0.65 MI. EAST OF US 51, Tangipahoa, LA
Built 1974 Load: 39.0 t ADT: 3,120
LA0038
GoodOver: TANG. R. W.RELIEF
LA0038, Tangipahoa, LA
Built 1975 Load: 39.0 t ADT: 3,120
LA0038
GoodOver: TANGIPAHOA RIVER E RELIE
LA0038, Tangipahoa, LA
Built 1975 Load: 39.0 t ADT: 3,120
LA1053
GoodOver: HAW BRANCH
4.7 MI N-W US 51 INTER., Tangipahoa, LA
Built 1996 Load: 39.0 t ADT: 595
LA1053
GoodOver: LINE CREEK
5.3 MI NW US 51 INTER., Tangipahoa, LA
Built 1996 Load: 39.0 t ADT: 595
Joe Yenni BLVD
GoodOver: DUNCAN CANAL
0.6M W OF WILLIAMS BLVD, Jefferson, LA
Built 1993 Load: 39.2 t ADT: 1,000
MAYFIELD RD
GoodOver: COULEE CANAL
1.0 MI. N. OF LA 3011, Terrebonne, LA
Built 2018 Load: 39.2 t ADT: 128
S Ave H
GoodOver: BLANC BAYOU
0.82 MI. SOUTH OF US 90, Acadia, LA
Built 2014 Load: 39.2 t ADT: 480
Port Rd
GoodOver: Commercial Canal
0.83 Mi W of La 83, Iberia, LA
Built 2013 Load: 39.2 t ADT: 2,313
Rue Des Babineaux
GoodOver: ILE Des Cannes Coulee
0.7 MI. W. OF LA 93, Lafayette, LA
Built 2013 Load: 39.2 t ADT: 238
Rue Des Babineaux
GoodOver: COULEE ILE DES CANNES
0.9 MI. W. OF LA 93, Lafayette, LA
Built 2013 Load: 39.2 t ADT: 304
Rue Des Babineaux
GoodOver: QUE DE TOTUE BAYOU
1 M. West of LA 724, Lafayette, LA
Built 2013 Load: 39.2 t ADT: 502
Division Rd
GoodOver: Bayou Portage
2.4 Mi NE of LA 686, St. Landry, LA
Built 2004 Load: 39.2 t ADT: 1,220
US0080
GoodOver: KCS RR
2.5 MI. E. OF I-20, Bienville, LA
Built 2016 Load: 39.2 t ADT: 780
Showing 9,551-9,600 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.