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
GoodOver: LA 83 S.P. RR
3.2 MI NW OF LA 3211, St. Mary, LA
Built 1978 Load: 32.7 t ADT: 10,070
US0090
GoodOver: ON-RAMP
0.14 MI W of LA 182, St. Mary, LA
Built 1977 Load: 32.7 t ADT: 7,885
US0090
GoodOver: US 90 EB ON RAMP
0.14 MI W of LA 182, St. Mary, LA
Built 1977 Load: 32.7 t ADT: 10,035
US0090
GoodOver: 6th
1.4 MI W of LA 182/LA 70, St. Mary, LA
Built 1977 Load: 32.7 t ADT: 2,163
US0090
GoodOver: RAMP J
0.09 MI E of LA 182, St. Mary, LA
Built 1984 Load: 32.7 t ADT: 12,192
US0090
GoodOver: RAMP I
0.17 MI E of LA 182, St. Mary, LA
Built 1984 Load: 32.7 t ADT: 24,384
Junius Rd
GoodOver: CANAL
2.5 Mi W of La 335, Vermilion, LA
Built 1986 Load: 32.7 t ADT: 204
I0220
GoodOver: SWAN LAKE ROAD
1.9 MI EAST OF LA 3105, Bossier, LA
Built 1978 Load: 32.7 t ADT: 35,972
LA3132
GoodOver: LA 526 BERT KOUNS IND. L
1.1 MI. W. OF LA 526, Caddo, LA
Built 2007 Load: 32.7 t ADT: 23,520
I0020
GoodOver: KCS RR & ACCESS RD
.5 MI EAST OF US 80, Caddo, LA
Built 1994 Load: 32.7 t ADT: 87,567
I0020
GoodOver: KCS RR & ACCESS ROAD
.6 MI EAST OF US 80, Caddo, LA
Built 1994 Load: 32.7 t ADT: 87,567
I0049
GoodOver: CYRPESS BAYOU
4.0 MI S OF LA 526 INTG, Caddo, LA
Built 1989 Load: 32.7 t ADT: 29,022
I0049
GoodOver: I-49 & KCS R/R
RAMP ES AT LA 3132 INTG, Caddo, LA
Built 1991 Load: 32.7 t ADT: 87,567
I0049
GoodOver: LA 3132/RAMPS/T&P RR
1.35M NORTH OF LA 526, Caddo, LA
Built 1991 Load: 32.7 t ADT: 87,568
I0049
GoodOver: I-49/RAMPS/KCS RR
1.65M NORTH OF LA 526 INT, Caddo, LA
Built 1991 Load: 32.7 t ADT: 87,567
I0049
GoodOver: ST. VINCENT AVENUE
2.58 M. NORTH OF LA 511, Caddo, LA
Built 1994 Load: 32.7 t ADT: 87,568
DILLINGHAM DRIVE
GoodOver: PIERREMONT DITCH
0.24 MI N. OF OAKHILL ST., Caddo, LA
Built 1996 Load: 32.7 t
EVANGELINE STREET
GoodOver: PIERREMONT DITCH
0.33 MI E OF FAIRFIELD AV, Caddo, LA
Built 1996 Load: 32.7 t
SOUTH LAKESHORE DR
GoodOver: CROSS LAKE TRIB
6.00 M EAST OF LA 169, Caddo, LA
Built 1991 Load: 32.7 t ADT: 1,352
Hubie Lewis Rd
GoodOver: BOND CREEK
1.3 MI. N OF LA 161, Claiborne, LA
Built 2007 Load: 32.7 t ADT: 150
LA0175
GoodOver: KCS RAILROAD
3.20MI N OF LA 3015, De Soto, LA
Built 2019 Load: 32.7 t ADT: 4,145
US0084
GoodOver: SABINE RIVER
THE LA TEX STATE LINE ON, De Soto, LA
Built 2016 Load: 32.7 t ADT: 6,314
US0084
GoodOver: SABINE RIVER
LA-TEX STATELINE ON US 84, De Soto, LA
Built 2017 Load: 32.7 t ADT: 9,752
I0049
GoodOver: DOLET SWAMP
1.08 M N OF LA 177 INTR, De Soto, LA
Built 1989 Load: 32.7 t ADT: 28,142
I0020
GoodOver: COOLEY BRANCH
0.41M EAST OF LA 7/MINDEN, Webster, LA
Built 1960 Load: 32.7 t ADT: 44,225
LA0134
GoodOver: BAYOU MACON
0.1 MILE WEST OF LA 577, East Carroll, LA
Built 2014 Load: 32.7 t ADT: 759
LA0582
GoodOver: BAYOU MACON
6.92 MI WEST OF LA 134, East Carroll, LA
Built 1983 Load: 32.7 t ADT: 593
LA0146
GoodOver: POPLAR BRANCH
1.5 MILES SOUTH OF LA 155, Jackson, LA
Built 2013 Load: 32.7 t ADT: 882
LA0146
GoodOver: FOUR MILE CREEK
13.02 MI E LINCOLN PAR LN, Jackson, LA
Built 2013 Load: 32.7 t ADT: 882
LA0146
GoodOver: STUD HORSE CREEK
0.3 MILES SOUTH OF LA 148, Jackson, LA
Built 2013 Load: 32.7 t ADT: 882
LA0004
GoodOver: CANEY CREEK
8.67 MI E of US 167, Jackson, LA
Built 1982 Load: 32.7 t ADT: 2,992
LA0546
GoodOver: ICG RAILROAD
3.8 MI. N. of LA 838, Ouachita, LA
Built 2000 Load: 32.7 t ADT: 6,382
STUBBS-VINSON RD
GoodOver: PATRICK BAYOU
2.1 MI N of US 80 E, Ouachita, LA
Built 2004 Load: 32.7 t ADT: 1,100
LA0377
GoodOver: WHISKEY CHITTO CREEK
2.1 MI N OF LA 26, Allen, LA
Built 1999 Load: 32.7 t ADT: 502
LA0113
GoodOver: OUISKA CHITTO CREEK
1.4 MI. N OF LA 26, Beauregard, LA
Built 1996 Load: 32.7 t ADT: 709
LA0113
GoodOver: QUISKA CHITTO CR RELIEF
1.8 MI. N OF LA 26, Beauregard, LA
Built 1996 Load: 32.7 t ADT: 709
JIM KENT RD
GoodOver: LITTLE CREEK
0.4 MI S of MILLER RD, Calcasieu, LA
Built 2018 Load: 32.7 t ADT: 65
I0010
GoodOver: SABINE RIVER
07104500100001, Calcasieu, LA
Built 2002 Load: 32.7 t ADT: 77,897
Ruby-Ctpoint Rd
GoodOver: WIGGINS BAYOU
0.87 MILES WEST OF LA 107, Avoyelles, LA
Built 2012 Load: 32.7 t ADT: 140
Robertson Rd
GoodOver: KITCHEN CREEK
1.0 MILES W US 165, Grant, LA
Built 2009 Load: 32.7 t ADT: 175
Meade Rd
GoodOver: WALDEN BAYOU
2.53 MI. SOUTH OF US 71, Grant, LA
Built 2008 Load: 32.7 t ADT: 100
Russell Cemetary
GoodOver: BAYOU DERBONNE
0.03 MI. W OF B. DERBONNE, Natchitoches, LA
Built 2013 Load: 32.7 t ADT: 72
EIGHT MILE LP
GoodOver: I-49
1.9 MI N OF LA 6, Natchitoches, LA
Built 1986 Load: 32.7 t ADT: 15,900
US0071
GoodOver: KCS RAILROAD
2.3 MI. N. OF I-49, Rapides, LA
Built 2013 Load: 32.7 t ADT: 10,090
LA0113
GoodOver: CALCASIEU RIVER RELIEF
3.81 MI. E OF INT LA112, Rapides, LA
Built 1981 Load: 32.7 t ADT: 2,071
I0049
GoodOver: I-49 OVER US 167
3 MI. SOUTH US 71, Rapides, LA
Built 1985 Load: 32.7 t ADT: 20,572
I0049
GoodOver: US 71 UP RR RAMP A-1
6.91 MI. NORTH OF LA 3265, Rapides, LA
Built 1992 Load: 32.7 t ADT: 15,642
I0049
GoodOver: UP RAILROAD
1.54 MI. NORTH OF LA 3250, Rapides, LA
Built 1994 Load: 32.7 t ADT: 20,561
I0049
GoodOver: US 167 BUSINESS
I-49 / US 167 INTG., Rapides, LA
Built 1995 Load: 32.7 t ADT: 15,642
Barron Rd.
GoodOver: Middle Creek
0.3 Mi N of Herrington Rd, Sabine, LA
Built 2024 Load: 32.7 t ADT: 50
Showing 8,351-8,400 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.