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
Kidder Rd
GoodOver: DRAIN
1.49 MI N OF LA 1252, Lafayette, LA
Built 2013 Load: 36.3 t ADT: 317
S. Domingue Ave.
GoodOver: Ill Des Cannes-Lat 7
0.09 MI N of Ridge Rd, Lafayette, LA
Built 2007 Load: 36.3 t ADT: 1,782
Dulles Dr.
GoodOver: COULEE ILE DES CANNES
0.9 W of La 93, Lafayette, LA
Built 2004 Load: 36.3 t ADT: 1,703
Chretien Point Rd.
GoodOver: BAYOU BOURBE
1.2 Mi NE of LA 356, St. Landry, LA
Built 1997 Load: 36.3 t ADT: 520
Bellard Loop
GoodOver: Drainage Canal
0.25 MI E of LA 35, St. Landry, LA
Built 2002 Load: 36.3 t ADT: 200
Threatt St.
GoodOver: RICHARDS GULLY
0.10 Mi S of LA 29, St. Landry, LA
Built 2005 Load: 36.3 t ADT: 200
Nezat Rd.
GoodOver: BAYOU LITTLE TECHE
0.05 MI W of LA 743, St. Landry, LA
Built 2005 Load: 36.3 t ADT: 410
LA0686
GoodOver: CREEK
0.16 MI NORTH OF LA 737, St. Martin, LA
Built 2013 Load: 36.3 t ADT: 3,212
Roy Rd
GoodOver: Coulee
0.01 Mi S. of Placide Rd, Vermilion, LA
Built 2022 Load: 36.3 t ADT: 100
Humble Rd
GoodOver: MOON ISLAND CANAL
0.01 Mi W of La 91, Vermilion, LA
Built 2013 Load: 36.3 t ADT: 73
LA0154
GoodOver: BLACK LAKE SLOUGH
3.5 MI EAST OF LA 792, Bienville, LA
Built 1979 Load: 36.3 t ADT: 856
I0220
GoodOver: KCS RR
4.2 MI EAST OF LA 3105, Bossier, LA
Built 1978 Load: 36.3 t ADT: 25,004
I0020
GoodOver: LINWOOD AVE I-49 RAMP
I-20 OVER I-49 RAMP, Caddo, LA
Built 1993 Load: 36.3 t ADT: 87,567
FLOURNOY LUCAS RD
GoodOver: I-49 UNDR FLOURNOY-LUCAS
0.5 M S OF LA 526 INTR, Caddo, LA
Built 1989 Load: 36.3 t ADT: 4,200
I0049
GoodOver: DOLET BAYOU
1.23 M S OF LA 177 INTR, De Soto, LA
Built 1988 Load: 36.3 t ADT: 16,334
I0049
GoodOver: DOLET SWAMP
1.04 M N OF LA 177 INTR, De Soto, LA
Built 1989 Load: 36.3 t ADT: 22,806
I0049
GoodOver: I-49 OVER ASSEFF RD INTG
2.97 MI S OF US 84 INTG, De Soto, LA
Built 1987 Load: 36.3 t ADT: 29,022
I0049
GoodOver: I-49 OVER ASSEFF RD INTG
2.98 MI S OF US 84 INTG, De Soto, LA
Built 1987 Load: 36.3 t ADT: 28,142
I0049
GoodOver: I-49 KCS RR
0.56 MI N OF LA 5 OVP, De Soto, LA
Built 1987 Load: 36.3 t ADT: 29,022
I0049
GoodOver: I-49 KCS RR
0.56 MI NO OF LA 5 OVP, De Soto, LA
Built 1987 Load: 36.3 t ADT: 28,142
LAMKIN RD
GoodOver: CYPRESS BAYOU
.25 MI. E. INT. 076, Jackson, LA
Built 1984 Load: 36.3 t ADT: 85
DELLA RD
GoodOver: CYPRESS CREEK
2.0 MILES EAST OF US 167, Lincoln, LA
Built 2011 Load: 36.3 t
ADAMS ST
GoodOver: E PRONG YOUNGS BAYOU
1.6 MI W OF US 165, Ouachita, LA
Built 2017 Load: 36.3 t ADT: 36
larry henry road
GoodOver: Longs Creek
0.7 Mi. SE of La 34, Ouachita, LA
Built 2018 Load: 36.3 t ADT: 130
OLD STERLINGTON RD
GoodOver: CHAUVIN BAYOU
0.7 MI NE of US 165 N, Ouachita, LA
Built 2004 Load: 36.3 t ADT: 10,800
LA0397
GoodOver: DRAINAGE CANAL
3.4 MI. W. OF LA 27, Calcasieu, LA
Built 1991 Load: 36.3 t ADT: 543
LINSCOMB ROAD
GoodOver: ROGERS GULLY
1.2 MI E of LA 26, Jefferson Davis, LA
Built 2004 Load: 36.3 t ADT: 50
LA0114
GoodOver: BAYOU DES GLAISE
0.02 MILE WEST OF LA 29, Avoyelles, LA
Built 1981 Load: 36.3 t ADT: 3,984
I0049
GoodOver: BAYOU BARBUE
0.84 MI. NORTH OF LA 490, Natchitoches, LA
Built 1984 Load: 36.3 t ADT: 18,305
US0167
GoodOver: RED RIVER GREER ST.
US 167 SOUTH @ RED RIVER, Rapides, LA
Built 1996 Load: 36.3 t ADT: 27,628
HICKORY HILL RD
GoodOver: US 167
0.8 MI. NORTH OF US 71, Rapides, LA
Built 1980 Load: 36.3 t ADT: 1,570
LA0112
GoodOver: ROCKY BAYOU
7.12 MI. WEST OF US 165, Rapides, LA
Built 1993 Load: 36.3 t ADT: 1,268
LA0457
GoodOver: WILSON BAYOU
4.53 MI. NE OF US 71, Rapides, LA
Built 1994 Load: 36.3 t ADT: 806
LA0457
GoodOver: BAYOU LATANIER
3.09 MI. SOUTH OF LA 3170, Rapides, LA
Built 1994 Load: 36.3 t ADT: 806
LA0113
GoodOver: SWETZ BRANCH
3.0 MI. EAST OF LA 462, Rapides, LA
Built 1994 Load: 36.3 t ADT: 822
LA0113
GoodOver: PRAIRIE BRANCH
2.04 MI. E OF INT LA112, Rapides, LA
Built 1994 Load: 36.3 t ADT: 2,071
LA0113
GoodOver: MASTERS CREEK
6.36 MI. E OF INT LA112, Rapides, LA
Built 1995 Load: 36.3 t ADT: 2,071
LA0116
GoodOver: FLAGON CREEK
2.83 MI NE JCT US 165, Rapides, LA
Built 1983 Load: 36.3 t ADT: 6,942
LA0028
GoodOver: CYPRESS BAYOU
4.22 MI. EAST OF LA 465, Rapides, LA
Built 1973 Load: 36.3 t ADT: 7,065
I0049
GoodOver: LA 498
I-49 / LA 498 INTG., Rapides, LA
Built 1992 Load: 36.3 t ADT: 42,770
I0049
GoodOver: LA 498
I-49 / LA 498 INTG., Rapides, LA
Built 1992 Load: 36.3 t ADT: 20,561
I0049
GoodOver: BAYOU JEAN DE JEAN
1.8 M NORTH OF LA 1200, Rapides, LA
Built 1989 Load: 36.3 t ADT: 11,969
LA1208-4
GoodOver: DITCH
0.45 MI. EAST OF US 71, Rapides, LA
Built 1989 Load: 36.3 t ADT: 4,598
LA3265
GoodOver: BAYOU CLEAR
0.25 MI. EAST OF US 165, Rapides, LA
Built 2005 Load: 36.3 t ADT: 4,368
LA0118
GoodOver: KIB CREEK
12.26 MI. EAST OF US 171, Sabine, LA
Built 2010 Load: 36.3 t ADT: 1,471
US0171
GoodOver: SAN JOSE CREEK
1.06 MI. S OF E JCT. LA 6, Sabine, LA
Built 2006 Load: 36.3 t ADT: 5,746
US0171
GoodOver: KCS RR
0.45 MI. NORTH OF LA 483, Sabine, LA
Built 2003 Load: 36.3 t ADT: 4,790
LA0191
GoodOver: BEECH BAYOU
2.08 MI. NORTH OF LA 1215, Sabine, LA
Built 1982 Load: 36.3 t ADT: 1,210
LA0464
GoodOver: WOLF CREEK
3.67 MI. S. JCT. LA 8, Vernon, LA
Built 1993 Load: 36.3 t ADT: 856
LA0465
GoodOver: YELLOW BRANCH
1.05 MI. EAST OF LA 28, Vernon, LA
Built 1994 Load: 36.3 t ADT: 500
Showing 9,001-9,050 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.