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
ERNEST ROAD
GoodOver: DEER CREEK
1.5 MI W OF LA 4, Franklin, LA
Built 2017 Load: 42.1 t ADT: 125
Dunbar Rd
GoodOver: VIDAL BAYOU
0.02 MI S OF LA 603, Tensas, LA
Built 2014 Load: 42.1 t ADT: 25
NORTH FLANNERY RD
GoodOver: LIVELY BAYOU
0.6 MI N OF US 190, East Baton Rouge, LA
Built 2019 Load: 42.1 t ADT: 14,900
Lower Zachary Rd
GoodOver: Drainage Bayou
0.185 Mi. W. of LA 19, East Baton Rouge, LA
Built 2019 Load: 42.1 t ADT: 2,000
Carruth Rd
GoodOver: COMITE CREEK
3.1 MI EAST OF WILSON LA, East Feliciana, LA
Built 1985 Load: 42.1 t ADT: 110
BY GROSSE TETE XNG
GoodOver: BAYOU GROSS TETE
0.02 Mi. E. of LA 77, Iberville, LA
Built 2007 Load: 42.1 t ADT: 220
I0012
GoodOver: AMITE RIVER
2.0 MILES WEST OF LA 3002, Livingston, LA
Built 2012 Load: 42.1 t ADT: 55,700
David Allen Rd
GoodOver: DARLING CREEK
3.10 MI NORTH OF LA.38 ON, St. Helena, LA
Built 2015 Load: 42.1 t
Wardline Rd
GoodOver: NATALBANY RIVER RELIEF
4MI N/W OR RT 190 EXIT, Tangipahoa, LA
Built 1998 Load: 42.1 t ADT: 1,259
Lawrence Cr Rd
GoodOver: Lawrence Creek
1.77 Mi. E. of La 430, Washington, LA
Built 2018 Load: 42.1 t ADT: 572
PLEASANT HILL RD
GoodOver: LITTLE SILVER CREEK
1.17 MI N OF 1056, Washington, LA
Built 2019 Load: 42.1 t ADT: 310
FILMORE AVE
GoodOver: LONDON AVE CANAL
0.01 MI E OF PRATT DRIVE, Orleans, LA
Built 2004 Load: 42.4 t
David Duboin Rd
GoodOver: Commercial Canal
2.1 Mi. E. of La 329, Iberia, LA
Built 2013 Load: 42.4 t ADT: 1,184
US0071
GoodOver: SPILLWAY CANAL
6.57 MI NORTH OF US 190, St. Landry, LA
Built 2004 Load: 42.4 t ADT: 1,695
LA0538
GoodOver: LA 538 OVER I-49
1.81 MI WEST OF US 71, Caddo, LA
Built 2013 Load: 42.4 t ADT: 1,568
Cox Rd
GoodOver: FRENCH CREEK
1.0 MI. S. OF LA 160, Webster, LA
Built 2007 Load: 42.4 t ADT: 86
NORTHEAST ST
GoodOver: DRAIN TO LITTLE DUGDEMON
1.0 MILES EAST OF US 167, Jackson, LA
Built 2011 Load: 42.4 t
LA1177
GoodOver: BAYOU BOEUF
1.63 MILES WEST OF SOUTH, Avoyelles, LA
Built 2015 Load: 42.4 t ADT: 387
B. Natchitoches Cr
GoodOver: BAYOU NATCHITOCHES
10 MI E OF LA 451, Avoyelles, LA
Built 2017 Load: 42.4 t ADT: 150
Grassy Lake Rd
GoodOver: FOOLS BAY
10 MI E OF LA 451, Avoyelles, LA
Built 2017 Load: 42.4 t ADT: 20
Cheneyville Cutoff
GoodOver: DRAINAGE CANAL
3.7 MI. W OF LA 1, Rapides, LA
Built 2012 Load: 42.4 t ADT: 543
LA0127
GoodOver: CREEK
8.11 MI. NW CALDWELL LINE, Winn, LA
Built 2010 Load: 42.4 t ADT: 183
YACKEY RD
GoodOver: COCODRIE BAYOU
3.38 MI W OF LA 15, Concordia, LA
Built 2016 Load: 42.4 t ADT: 50
LA0004
GoodOver: DEER CREEK
1.6 MILES SOUTHEAST OF LA, Franklin, LA
Built 2016 Load: 42.4 t ADT: 3,423
E Flanacher Rd
GoodOver: DRAINAGE BAYOU
1.2 MI E OF US 61, East Baton Rouge, LA
Built 2018 Load: 42.4 t ADT: 994
Carruth Rd
GoodOver: Drainage Cr
2.8 Mi. E of LA 19, East Feliciana, LA
Built 2022 Load: 42.4 t ADT: 386
Newsom Rd
GoodOver: MCQUINNEY BAYOU
1.0 MILE SOUTH OF HIGHWAY, East Feliciana, LA
Built 2012 Load: 42.4 t ADT: 72
Island Rd
GoodOver: SCOTT CREEK
3.4 MI W OF US 61, West Feliciana, LA
Built 2016 Load: 42.4 t ADT: 85
Peterson Rd
GoodOver: Spring Creek
0.9 Mi E of LA 421, West Feliciana, LA
Built 2020 Load: 42.4 t ADT: 200
Esterbrook Rd
GoodOver: SELSERS CREEK
4 MI. S.E. LA 3158 EXIT, Tangipahoa, LA
Built 1986 Load: 42.4 t ADT: 1,899
Yokum Rd
GoodOver: PONCHATOULA CREEK
2.6 MI N.E. OF JCT. 51&22, Tangipahoa, LA
Built 1986 Load: 42.4 t ADT: 1,008
UNNAMED
GoodOver: ROADSIDE CANAL
CANAL ALONG LA HWY. 27, Cameron, LA
Built 2012 Load: 42.6 t ADT: 65
VASTAR ROAD
GoodOver: ROADSIDE CANAL
HWY 27 & CENTRAL CANAL, Cameron, LA
Built 2012 Load: 42.6 t ADT: 10
LA0308
GoodOver: THERIOT CANAL
2.6 M N OF LA 3198, Lafourche, LA
Built 1991 Load: 42.6 t ADT: 5,050
US0090
GoodOver: DRAINAGE CANAL
2.7 MI EAST OF LA 1, Lafourche, LA
Built 1976 Load: 42.6 t ADT: 27,665
US0090-B
GoodOver: CITY STREETS
0.1 MI S OF US 90B, Orleans, LA
Built 1960 Load: 42.6 t ADT: 3,803
I0610
GoodOver: CANAL BLVD
.8 MI EAST OF I-10, Orleans, LA
Built 1973 Load: 42.6 t ADT: 101,204
I0010
GoodOver: ON RAMP I-10E
.03 MI EAST OF LA 39, Orleans, LA
Built 1968 Load: 42.6 t ADT: 7,620
I0010
GoodOver: OFF RAMP I-10W.
1.7 MI EAST OF LA 39, Orleans, LA
Built 1968 Load: 42.6 t ADT: 7,620
US0090
GoodOver: CANAL
0.2 MI EAST OF LA 1124, Acadia, LA
Built 1992 Load: 42.6 t ADT: 2,899
US0090
GoodOver: BNSF R.R. Bayou Blanc
2.1 MI EAST OF LA 1111, Acadia, LA
Built 2000 Load: 42.6 t ADT: 7,162
LA0091
GoodOver: BAYOU MALLET
1.2 MI N. West OF LA 3067, Acadia, LA
Built 1998 Load: 42.6 t ADT: 1,617
LA0013
GoodOver: BAYOU
2.59M NORTH OF LA 10, Evangeline, LA
Built 1994 Load: 42.6 t ADT: 6,976
I0010
GoodOver: LOUISIANA AVENUE
1.38 MI E of I-49, Lafayette, LA
Built 2003 Load: 42.6 t ADT: 56,748
I0010
GoodOver: LOUISIANA AVENUE
4.83 Mi. West of LA 328, Lafayette, LA
Built 2003 Load: 42.6 t ADT: 2,969
LA0335
GoodOver: BILL CANAL
2.6 Mi West of LA 694, Vermilion, LA
Built 2001 Load: 42.6 t ADT: 507
I0220
GoodOver: VIKING-DRIVE
2.31 MI EAST OF LA 3049, Bossier, LA
Built 1978 Load: 42.6 t ADT: 13,700
LA3132
GoodOver: LA 511
1.0 MI. E. OF I-20, Caddo, LA
Built 1994 Load: 42.6 t ADT: 53,886
LA3132
GoodOver: LA 511
4.4 MI. W OF US 171, Caddo, LA
Built 1994 Load: 42.6 t ADT: 23,520
I0049
GoodOver: FRIERSON RD INTERG
5.3 MI N OF LA 175 INTG, De Soto, LA
Built 1988 Load: 42.6 t ADT: 29,022
Showing 10,151-10,200 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.