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
LA0064
GoodOver: AMITE RIVER
3.0 MILES WEST OF LA 16, Livingston, LA
Built 2012 Load: 47.0 t ADT: 19,524
Bootlegger RD
GoodOver: Branch
0.5 Mi. N. of LA 1085, St. Tammany, LA
Built 2020 Load: 47.0 t ADT: 10,000
I0010
GoodOver: TRANSCONTINENTAL DR.
3.0 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 47.2 t ADT: 137,542
LA0088
GoodOver: ROMERO CANAL
1.8 MI East OF La 89, Iberia, LA
Built 2004 Load: 47.2 t ADT: 4,573
LA0103
GoodOver: BAYOU CARRON
1.45 MI EAST OF I-49, St. Landry, LA
Built 2004 Load: 47.2 t ADT: 2,097
LA0581
GoodOver: TENSAS BAYOU
.99 MI EAST OF LA 134, East Carroll, LA
Built 2001 Load: 47.2 t ADT: 765
LA1153
GoodOver: CALCASIEU RIVER TRIB
1.0 MI N of US 165, Allen, LA
Built 2003 Load: 47.2 t ADT: 1,822
LA0122
GoodOver: UNNAMED CREEK
7.99. M E OF E JCT LA 471, Grant, LA
Built 1999 Load: 47.2 t ADT: 683
LA0122
GoodOver: BEAVER CREEK
3.38 M E OF E JCT LA 471, Grant, LA
Built 1999 Load: 47.2 t ADT: 683
LA0028
GoodOver: BAYOU MARIA
0.26 MI. EAST OF LA 3144, Rapides, LA
Built 1994 Load: 47.2 t ADT: 14,124
I0049
GoodOver: DRAINAGE CANAL
0.94 MI NORTH OF LA 181, Rapides, LA
Built 1985 Load: 47.2 t ADT: 20,572
I0049
GoodOver: DRAINAGE CANAL
0.94 MI NORTH OF LA 181, Rapides, LA
Built 1985 Load: 47.2 t ADT: 11,969
I0049
GoodOver: US 71 RAMPS UP RR
6.91 MI. NORTH OF LA 3265, Rapides, LA
Built 1992 Load: 47.2 t ADT: 20,561
I0049
GoodOver: I-49 US71 RAMPS PHILLIP
I-49 AND US 71/165 INTG, Rapides, LA
Built 1996 Load: 47.2 t ADT: 15,642
LA0010
GoodOver: ASYLUM BRANCH
0.06 Mi E of LA 952, East Feliciana, LA
Built 1988 Load: 47.2 t ADT: 6,113
I0055
GoodOver: I-55 OVER US 190
I0055, Tangipahoa, LA
Built 1968 Load: 47.2 t ADT: 36,311
LA1249
GoodOver: I-12
2.1 M E OF LA 43, Tangipahoa, LA
Built 1970 Load: 47.2 t ADT: 6,110
LA0010
GoodOver: BOGUE CHITTO RELIEF
0.5 MI E LA 10 & LA 440, Washington, LA
Built 1997 Load: 47.2 t ADT: 12,018
ENTERPRISE DR
GoodOver: LITTLE BAYOU BLACK
0.2 MILE NORTH EAST OF LA, Terrebonne, LA
Built 2012 Load: 47.3 t ADT: 5,909
ENTERPRISE DR.
GoodOver: LITTLE BAYOU BLACK
0.2 MILE NORTH EAST OF LA, Terrebonne, LA
Built 2012 Load: 47.3 t ADT: 5,909
LA0331
GoodOver: CREEK
0.43 MILES N. OF LA 330, Vermilion, LA
Built 2015 Load: 47.3 t ADT: 1,518
I0049
GoodOver: LA 170
I-49 / LA 170 INTG., Caddo, LA
Built 2013 Load: 47.3 t ADT: 53,023
I0049
GoodOver: LA 170
I-49 / LA 170 INTG., Caddo, LA
Built 2013 Load: 47.3 t ADT: 6,846
OAK Str
GoodOver: GUM BAYOU
ON OAK STREET 0.25 EAST O, St. Tammany, LA
Built 2014 Load: 47.3 t ADT: 300
Holly Drive
GoodOver: Little Bogue Falaya
.15 miles north of LA 21, St. Tammany, LA
Built 2017 Load: 47.3 t ADT: 770
Cocodril Rd
GoodOver: COULEE
0.4 Mi. E. of La 343, Acadia, LA
Built 1986 Load: 47.6 t ADT: 36
I0049
GoodOver: LA 3194
I-49 AT LA 3194, Caddo, LA
Built 2016 Load: 47.6 t ADT: 59,221
I0049
GoodOver: LA 3194
I-49 AT LA 3194, Caddo, LA
Built 2016 Load: 47.6 t ADT: 6,846
Grabault Rd.
GoodOver: Bayou Coulee
0.7 MILES EAST OF JCT LA, Morehouse, LA
Built 2012 Load: 47.6 t ADT: 2,100
STANLEY STREET
GoodOver: CREEK
0.04 MI W OF POWELL LANE, Calcasieu, LA
Built 2011 Load: 47.6 t ADT: 10
E. GAUTHIER RD
GoodOver: BLACK BAYOU TRIBUTARY
0.8 MI of E LA 397, Calcasieu, LA
Built 1988 Load: 47.6 t ADT: 7,344
Douglas Rd
GoodOver: SWAFFORD CREEK
0.51 MILES WEST OF NEWTON, Grant, LA
Built 2013 Load: 47.6 t ADT: 100
LA0067
GoodOver: CYPRESS BAYOU
APPROX. .1 MI. SOUTH OF B, East Baton Rouge, LA
Built 2009 Load: 47.6 t ADT: 26,463
ALPHONSE FORBES RD
GoodOver: SANDY CR
0.61 MI S OF LA 409, East Baton Rouge, LA
Built 2023 Load: 47.6 t ADT: 73
I0049
GoodOver: EAGLE CHUTE
0.71 M. N. OF LA 170, Caddo, LA
Built 2013 Load: 48.0 t ADT: 53,023
I0049
GoodOver: EAGLE CHUTE
0.71 M. N. OF LA 170, Caddo, LA
Built 2013 Load: 48.0 t ADT: 6,846
MURPHY ST
GoodOver: KCS RR
0.05 MI E OF US 80, Caddo, LA
Built 2016 Load: 48.0 t ADT: 13,100
LA0520
GoodOver: MIDDLE FORK B DARBONNE
9.4 MI. N. OF US 79, Claiborne, LA
Built 2017 Load: 48.0 t ADT: 532
LA1176
GoodOver: Bayou Boeuf
0.45 Mi E of LA 29, Avoyelles, LA
Built 2022 Load: 48.0 t ADT: 310
Congress BLVD
GoodOver: Dawson Cr
0.1 Mi. N. of LA 427, East Baton Rouge, LA
Built 2021 Load: 48.0 t ADT: 4,262
Willie Redden Rd
GoodOver: BLACK CREEK
2.6 MILES SOUTH OF LA 10, St. Helena, LA
Built 2014 Load: 48.0 t
Sibley Rd
GoodOver: BRANCH
1.3 MILES SOUTH OF LA 16, St. Helena, LA
Built 2014 Load: 48.0 t
Hornsby Rd
GoodOver: CREEK
1 MILE NORTH OF LA. 16, St. Helena, LA
Built 2014 Load: 48.0 t
Carrier Rd
GoodOver: DUTCHMAN CREEK
ON CARRIER ROAD 0.35 MILE, St. Helena, LA
Built 2014 Load: 48.0 t
I0010
GoodOver: VET MEM HWY
2.1 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 48.1 t ADT: 4,217
I0010
GoodOver: ON RAMP-ELY FDS.
.68 MI EAST OF LA 39, Orleans, LA
Built 1974 Load: 48.1 t ADT: 7,620
Louisiana Ave.
GoodOver: COULEE
0.57 Mi S of I-10, Lafayette, LA
Built 2004 Load: 48.1 t ADT: 4,250
Louisiana Ave.
GoodOver: COULEE
1.93 Mi N of La 94, Lafayette, LA
Built 2004 Load: 48.1 t ADT: 4,675
US0080
GoodOver: YOUNGS BAYOU
.7 MI EAST OF LA 840-6, Ouachita, LA
Built 1962 Load: 48.1 t ADT: 17,683
I0049
GoodOver: BAYOU BARBUE
0.84 MI. NORTH OF LA 490, Natchitoches, LA
Built 1984 Load: 48.1 t ADT: 28,142
Showing 10,801-10,850 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.