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
US0090
FairOver: COONE GULLY
1.9 MI E OF LA 3063, Calcasieu, LA
Built 1954 Load: 20.4 t ADT: 2,509
GRAY RD
FairOver: GUM GULLEY
5.5 MI W OF LA108, Calcasieu, LA
Built 1964 Load: 20.4 t ADT: 278
RAVIA RD
FairOver: HENDERSON BAYOU
0.04 MI WEST OF LA 27, Calcasieu, LA
Built 1972 Load: 20.4 t ADT: 715
RAVIA RD
FairOver: HENDERSON BAYOU
0.4 MI WEST OF LA 27, Calcasieu, LA
Built 1970 Load: 20.4 t ADT: 824
WRIGHT RD
FairOver: WEST FORK ENGLISH BAYOU
0.8 MI EAST OF LA 1256, Calcasieu, LA
Built 1968 Load: 20.4 t ADT: 1,755
MORNINGSTAR RD
FairOver: BAYOU VERDING
0.1 M S OF OLD SPN. TRL, Calcasieu, LA
Built 1959 Load: 20.4 t ADT: 10
CHARLES BREAUX RD
FairOver: CREEK
0.8 MI NORTH OF LA 3059, Calcasieu, LA
Built 1989 Load: 20.4 t ADT: 131
DUNN FERRY RD
FairOver: WEST FORK CALCASIEU RIVE
6.1 MI. E. OF LA 27, Calcasieu, LA
Built 1965 Load: 20.4 t ADT: 899
FDR 502
FairOver: N. FORK MILE CREEK
LOGMI 2.62 FR 426 TO, Winn, LA
Built 1968 Load: 20.4 t ADT: 16
FDR 530
FairOver: LONG BRANCH
LOGMI O.24 FR 566 TO, Grant, LA
Built 1965 Load: 20.4 t ADT: 20
S Tiger Bend Rd
FairOver: BOGGY CUT BAYOU
5.3 M E of LA 73, East Baton Rouge, LA
Built 1965 Load: 20.4 t ADT: 5,630
LA0019
FairOver: CARTER CREEK
2.2 M S of LA 10, East Feliciana, LA
Built 1949 Load: 20.4 t ADT: 5,014
LA0076
FairOver: CHAMBERLIN CANAL
2.3 M E of LA 413@LA 76, West Baton Rouge, LA
Built 1952 Load: 20.4 t ADT: 7,562
Cr-225
FairOver: SARA BAYOU
2.8 MI. WNW LA 10 US 61, West Feliciana, LA
Built 2007 Load: 20.4 t ADT: 74
N. Pearl St
FairOver: BR. OVER FRENCH BRANCH
N. 190 ON PEARL ST. 0.60, St. Tammany, LA
Built 1988 Load: 20.4 t ADT: 350
US0190
FairOver: BRANCH
0.9 M E OF LA 445, Tangipahoa, LA
Built 1954 Load: 20.4 t ADT: 8,262
LA0442
FairOver: PONCHATOULA CREEK
0.2 M W OF US 51, Tangipahoa, LA
Built 1979 Load: 20.4 t ADT: 5,026
LA0436
FairOver: DRAIN
0.1 M NE OF LA 21, Washington, LA
Built 1939 Load: 20.4 t ADT: 1,306
US0090-B
FairOver: RAMP MC-4
2.2 MI EAST OF LA 23, Jefferson, LA
Built 1984 Load: 20.7 t ADT: 15,955
I0010
FairOver: LA 49; INTGS
0.5 MI S OF W ESPLANADE A, Jefferson, LA
Built 2001 Load: 20.7 t ADT: 15,955
LAPALCO BLVD
FairOver: AMES CANAL
0.3 MI.W OF AMES BL, Jefferson, LA
Built 1970 Load: 20.7 t ADT: 2,000
CIVIC CENTER BLVD
FairOver: LITTLE BLACK BAYOU
0.008 MI S OF LA 311, Terrebonne, LA
Built 1989 Load: 20.7 t ADT: 6,810
Security Blvd
FairOver: LITTLE BLACK BAYOU
0001 LOG MI FROM INT, Terrebonne, LA
Built 1979 Load: 20.7 t ADT: 468
LA0092
FairOver: ANSEIM COUIEE
1.2 MI EAST OF LA 733, Lafayette, LA
Built 1973 Load: 20.7 t ADT: 5,486
E. Verot School Rd
FairOver: DES POCHES COULEE
0.8 Mi SW of US 90, Lafayette, LA
Built 1991 Load: 20.7 t ADT: 8,989
Le Violon Rd
FairOver: ILE DES CANNES COULEE
1 Mi North of Congress St, Lafayette, LA
Built 1977 Load: 20.7 t ADT: 2,400
W. Bloch St.
FairOver: BAYOU TESSON
0.3 Mi W. of La 182, St. Landry, LA
Built 1965 Load: 20.7 t ADT: 2,500
LA7822
FairOver: MACKS BAYOU
.98 MI EAST OF LA 72, Bossier, LA
Built 1970 Load: 20.7 t ADT: 4,896
I0220
FairOver: US 71
I-220 OVER US 71, Caddo, LA
Built 1979 Load: 20.7 t ADT: 42,148
Johns Rd.
FairOver: Trib To Mill Creek
2 Mi.S. Keatchi-Marshall, Caddo, LA
Built 1982 Load: 20.7 t ADT: 59
Keatchie-Marshall
FairOver: BUSHNECK BAYOU TRIB.
2.0 MILES EAST OF LA 169, Caddo, LA
Built 1985 Load: 20.7 t ADT: 40
Keatchie-Marshall
FairOver: BUSHNECK BAYOU TRIB.
1.7 MILES EAST OF LA 169, Caddo, LA
Built 1985 Load: 20.7 t ADT: 40
Keatchie-Marshall
FairOver: KEACHI MARSHLL BUSHNECK
1.3 MI. EAST OF LA 169, Caddo, LA
Built 1985 Load: 20.7 t ADT: 40
Robson Rd
FairOver: CHICO BAYOU ROBSON ROAD
1.9 MI. S.W. OF LA HWY. 1, Caddo, LA
Built 1984 Load: 20.7 t ADT: 97
JEWELLA AVE
FairOver: MOPAC RAILROAD
0.5 MI. N. OF LA 511, Caddo, LA
Built 1982 Load: 20.7 t ADT: 7,514
Blanchard Latex Rd
FairOver: E.FORK OF SHETTLEWORTH B
1.4 MI. EAST OF LA 169, Caddo, LA
Built 1985 Load: 20.7 t ADT: 78
McCain Rd
FairOver: MAHLIN BAYOU
2.3 MI S OF INT W HW, Caddo, LA
Built 1980 Load: 20.7 t ADT: 40
McCain Rd
FairOver: TRIBUTARY TO MAHLIN BAYO
1.2 MI S OF INT W HW, Caddo, LA
Built 1980 Load: 20.7 t ADT: 59
Pelican Lodge Rd
FairOver: JEEMS BAYOU
2 MI S OF INT OF LA HWY 2, Caddo, LA
Built 1994 Load: 20.7 t ADT: 59
Rains School Rd
FairOver: BLACK BAYOU TRIB
0.3M SE OF LA 170, Caddo, LA
Built 1993 Load: 20.7 t ADT: 57
Sartor Rd
FairOver: ALLIGATOR BAYOU
1.3M EAST OF LA 3049, Caddo, LA
Built 1992 Load: 20.7 t ADT: 57
Hosston Rodessa Rd
FairOver: GRAY BRANCH
0.75 MI EAST OF LA 1, Caddo, LA
Built 1988 Load: 20.7 t ADT: 59
Gilliam Scotts Slu
FairOver: TRIBUTARY TO KELLY BAYOU
1.6 MI S OF INT 531, Caddo, LA
Built 1980 Load: 20.7 t ADT: 59
MUNERLYN CHAPEL RD
FairOver: HARTMAN BRANCH
0.75M W OF US 71, Caddo, LA
Built 1993 Load: 20.7 t ADT: 78
Capps City Rd
FairOver: E.FORK OF STATELINE CREE
0.5 M E. OF LA HWY 1, Caddo, LA
Built 1982 Load: 20.7 t ADT: 59
Wynn Rd
FairOver: BARDSTOWN BAYOU
2.0 MI EAST OF US 71, Caddo, LA
Built 1989 Load: 20.7 t ADT: 59
Capps City Rd
FairOver: STATE LINE CREEK TRIB
1.2 M EAST OF LA 1, Caddo, LA
Built 1990 Load: 20.7 t ADT: 59
I0049
FairOver: I-49 OVER US 84
4.85 MI S OF LA 509 INTER, De Soto, LA
Built 1985 Load: 20.7 t ADT: 29,022
LA0148
FairOver: CREEK
6.93 MI WEST OF LA 146, Jackson, LA
Built 1977 Load: 20.7 t ADT: 532
GANSVILLE ROAD
FairOver: GARRETT CREEK
0.9 Mi. South of LA 4, Jackson, LA
Built 1988 Load: 20.7 t ADT: 421
Showing 1,151-1,200 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.