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
Haygood Rd
GoodOver: HAYGOOD RD COTTONWOOD B
.2 MI N OF LA 173, Caddo, LA
Built 1992 Load: 21.1 t ADT: 57
Rains School Rd
GoodOver: TRIBUTARY TO BLACK BAYOU
0.75 MI. SOUTH OF LA 170, Caddo, LA
Built 1999 Load: 21.1 t ADT: 38
Mailbox Rd
GoodOver: TRIB TO BLACK BAYOU
1.8 MI. NORTH OF LA 170, Caddo, LA
Built 2002 Load: 21.1 t ADT: 38
Hosston Rodessa Rd
GoodOver: BLACK BAYOU TRIB
0.25 MI WEST OF US HWY 72, Caddo, LA
Built 1989 Load: 21.1 t ADT: 59
United Gas Rd No 1
GoodOver: BLACK BAYOU TRIB
0.2M SOUTH OF LA 168, Caddo, LA
Built 1992 Load: 21.1 t ADT: 38
FORSYTHE ROAD
GoodOver: CROOKED CREEK
2.8 MI E OF US 167, Lincoln, LA
Built 2017 Load: 21.1 t ADT: 66
GARRIE CUT-OFF
GoodOver: GUM SLOUGH
0.8 MI EAST OF LA 109, Calcasieu, LA
Built 1986 Load: 21.1 t ADT: 482
Pride-Baywood Rd
GoodOver: HANNA CREEK
3.9 MI. E. OF LA409, East Baton Rouge, LA
Built 1967 Load: 21.1 t ADT: 1,118
Cooper Rd
GoodOver: DUMMY BRANCH
1.2 MI N JCT LA 1074&1075, Washington, LA
Built 2001 Load: 21.1 t ADT: 311
S.N.C. FRANCIS PK
GoodOver: I-10; RR; STREETS
1.5 MI S OF TULANE AVENUE, Orleans, LA
Built 1976 Load: 21.4 t
WESTSIDE BLVD
GoodOver: TERREBONNE BAYOU
0.1 MI. E. OF LA 24, Terrebonne, LA
Built 1974 Load: 21.4 t ADT: 5,322
US0090
GoodOver: BAYOU TERREBONNE
.2 MI EAST OF LA 24, Terrebonne, LA
Built 1980 Load: 21.4 t ADT: 2,280
Waterplant Rd
GoodOver: DEVIL SWAMP CANAL
03.15 MI FROM LA 24, Terrebonne, LA
Built 1986 Load: 21.4 t ADT: 1,958
West Lakeshore Dr
GoodOver: TRIBUTARY TO CROSS LAKE
0.3 MI W OF N LAKESHORE, Caddo, LA
Built 2001 Load: 21.4 t ADT: 38
Hosston Rodessa Rd
GoodOver: TRIBUTARY TO BIG BRANCH
3.25 MI W. OF HWY. 71, Caddo, LA
Built 1987 Load: 21.4 t ADT: 40
Atkins Rd.
GoodOver: Joes Bayou
1.7 Mi. NW of LA 577, Madison, LA
Built 2022 Load: 21.4 t ADT: 23
N SHATTUCK ST
GoodOver: SP R/R-CITY STS
0.7 MI N OF US 90 BUS, Calcasieu, LA
Built 1991 Load: 21.4 t ADT: 4,606
MAGNOLIA LOOP
GoodOver: ROUTH CREEK
0.9 MI SE OF LA 776, LaSalle, LA
Built 2005 Load: 21.4 t ADT: 73
Roddy Rd
GoodOver: BERT ALLEN DITCH
0.3 MILES NORTH OF JCT LA, Ascension, LA
Built 2009 Load: 21.4 t ADT: 1,200
LA0010
GoodOver: COMITE RIVER
1.67 MILES W OF JCT LA 67, East Feliciana, LA
Built 2005 Load: 21.4 t ADT: 3,904
RUDOLPH DAVIS RD
GoodOver: UNNAMED CR
0.4 MI E OF LA SLIGO RD, West Feliciana, LA
Built 2023 Load: 21.5 t ADT: 20
TROY SPEARS RD
GoodOver: SPRING CREEK
.2 Mi. S. of LA 1054, Tangipahoa, LA
Built 2019 Load: 21.6 t ADT: 88
OAKPOINT RD
GoodOver: BAYOU POINTE AU CHENE
0.01 M WEST OF LA 665, Lafourche, LA
Built 1989 Load: 21.7 t ADT: 497
US0090-B
GoodOver: CITY STREETS
1.65 MI SOUTH OF I-10, Orleans, LA
Built 1994 Load: 21.7 t ADT: 67,143
W HEATHER DR
GoodOver: COUSINS CANAL
0.3 MI SOUTH OF US 90, St. Charles, LA
Built 1988 Load: 21.7 t
BIRCH ST
GoodOver: COUSINS CANAL
0.7 MI SOUTH OF US 90, St. Charles, LA
Built 1988 Load: 21.7 t
LA0330
GoodOver: Boston Canal
0.4 Mi W of LA 331, Vermilion, LA
Built 1959 Load: 21.7 t ADT: 1,923
George Hunt Rd
GoodOver: TRIB TO B NA BONCHASSE
1.78 MI SOUTH OF LA 3015, De Soto, LA
Built 2011 Load: 21.7 t ADT: 130
WOODSIDE RD
GoodOver: TURNER BAYOU
2.05 MI W OF LA 105, Avoyelles, LA
Built 2018 Load: 21.7 t ADT: 86
LA1216
GoodOver: DITCH
3.8 MI EAST OF US 171, Sabine, LA
Built 1966 Load: 21.7 t ADT: 209
BRANDON RD
GoodOver: HURRICANE CREEK
APPROX. 4 M. SE OF LA 475, Sabine, LA
Built 1993 Load: 21.7 t ADT: 60
LA0111
GoodOver: DRAIN
1.6 MI. EAST OF LA 392, Vernon, LA
Built 1995 Load: 21.7 t ADT: 937
LA0008
GoodOver: LITTLE RIVER
8.0 MI SOUTH OF LA 774, LaSalle, LA
Built 1981 Load: 21.7 t ADT: 1,590
US0051
GoodOver: DRAIN
0.1 M N OF LA 440, Tangipahoa, LA
Built 1956 Load: 21.7 t ADT: 2,266
Old Columbia Rd
GoodOver: BROWN BRANCH
0.3 M N OF LA 38, Washington, LA
Built 1989 Load: 21.7 t ADT: 137
LA0487
GoodOver: MAYOUS BAYOU
.32 MI. N OF LA120, Natchitoches, LA
Built 1958 Load: 21.8 t ADT: 570
S Harrells Ferry
GoodOver: JONES CREEK
2.0 M W OF LA 3245, East Baton Rouge, LA
Built 2012 Load: 21.8 t ADT: 8,330
S Harrells Ferry
GoodOver: JONES CREEK
3.0 M W OF LA 3245, East Baton Rouge, LA
Built 2012 Load: 21.8 t ADT: 8,330
LA0620
GoodOver: TIGER BAYOU
3.2 M W of LA 415, West Baton Rouge, LA
Built 1958 Load: 21.8 t ADT: 2,107
Cr-714
GoodOver: THOMPSON CREEK (WEST BR)
1.9 M NE of US 61, West Feliciana, LA
Built 1984 Load: 21.8 t ADT: 65
LA0442
GoodOver: TRAYLOR BRANCH
0.1 M E OF LA 43, Livingston, LA
Built 1962 Load: 21.8 t ADT: 5,026
US0090-B
GoodOver: DRAIN CANAL
6.1 MILES WEST OF MISSISS, Jefferson, LA
Built 1983 Load: 22.0 t ADT: 67,143
David Dr
GoodOver: CANAL NO. 4
.8 MILES NORTH OF WEST ME, Jefferson, LA
Built 2004 Load: 22.0 t
Choctaw Rd
GoodOver: ST JAMES CANAL
04.69 MI FROM INT. 191, Lafourche, LA
Built 1997 Load: 22.0 t ADT: 961
SALCEDO ST
GoodOver: WASHINGTON AVENUE CANAL
0.0 MI E OF WASHINGTON AV, Orleans, LA
Built 1984 Load: 22.0 t
LA0013
GoodOver: DRAIN
.7 MI NORTH OF LA 167, Evangeline, LA
Built 1970 Load: 22.0 t ADT: 1,228
Plaisance St.
GoodOver: Bayou Tesson
0.2 Mi S of W MLK Dr., St. Landry, LA
Built 1965 Load: 22.0 t ADT: 500
Arkansas St
GoodOver: Arkansas St
0.18 MI S OF JCT LA 2, Bossier, LA
Built 2019 Load: 22.0 t ADT: 100
I0220
GoodOver: RAMP I-20(EB)-I-220(NB)
0.4 MI S OF I-20, Bossier, LA
Built 1979 Load: 22.0 t ADT: 15,642
White Springs Rd
GoodOver: WALLACE BAYOU
0.5 SW OF CADDO RD 26 (EL, Caddo, LA
Built 2010 Load: 22.0 t ADT: 200
Showing 6,551-6,600 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.