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
IDA STATELINE RD
GoodOver: I-49
0.8 MI. W. OF US 71, Caddo, LA
Built 2010 Load: 33.4 t ADT: 10,300
I0049
GoodOver: KELLY BAYOU
3.48 M. N. OF US 71, Caddo, LA
Built 2014 Load: 33.4 t ADT: 53,023
I0049
GoodOver: KELLY BAYOU
3.48 M. N. OF US 71, Caddo, LA
Built 2014 Load: 33.4 t ADT: 6,846
Sanders Rd
GoodOver: TRIB TO CROWS CREEK
0.8 MI EAST OF US 79, Claiborne, LA
Built 2012 Load: 33.4 t ADT: 55
Sanders Rd
GoodOver: CROWS CREEK
0.9 MI EAST OF US 79, Claiborne, LA
Built 2012 Load: 33.4 t ADT: 50
Hunter Rd
GoodOver: CLEMENT CREEK
3.5 MI NORTH OF US 84, De Soto, LA
Built 2011 Load: 33.4 t ADT: 150
RED CUT LOOP RD
GoodOver: PRAIRION BAYOU
4.0 MILES EAST OF LA 557, Ouachita, LA
Built 2011 Load: 33.4 t ADT: 200
RED CUT LOOP RD
GoodOver: PRAIRION BAYOU
4.0 MILES EAST OF LA 557, Ouachita, LA
Built 2011 Load: 33.4 t ADT: 200
WINNFIELD RD
GoodOver: CHENIERE CREEK
1.5 MILES NORTH OF LA 34, Ouachita, LA
Built 2012 Load: 33.4 t ADT: 350
GARRETT RD
GoodOver: YOUNGS BAYOU
GARRET ROAD, Ouachita, LA
Built 1982 Load: 33.4 t ADT: 600
NUTLAND RD
GoodOver: AIRPORT CANAL
NUTLAND ROAD S OF MO, Ouachita, LA
Built 1983 Load: 33.4 t ADT: 800
PONY GREER RD
GoodOver: BURNS BAYOU
0.2 MI E of LA 3048, Richland, LA
Built 2003 Load: 33.4 t ADT: 300
MIDWAY CHURCH LANE
GoodOver: BOGZACK CREEK
0.7 MI NE of LA 17, Richland, LA
Built 2003 Load: 33.4 t ADT: 100
US0167
GoodOver: BIG CREEK
1.07 MILES SOUTH OF LA 12, Grant, LA
Built 2014 Load: 33.4 t ADT: 7,084
US0171
GoodOver: BAYOU TORO RELIEF
5.22 MI. NORTH OF LA 392, Sabine, LA
Built 2009 Load: 33.4 t ADT: 4,790
LA0010
GoodOver: WHISKEY CHITTO
12.10 MI EAST OF LA 467, Vernon, LA
Built 2007 Load: 33.4 t ADT: 1,673
US0084
GoodOver: UNNAMED CREEK
13.2 MI E OF SALINE BAYOU, Winn, LA
Built 1997 Load: 33.4 t ADT: 2,963
LA1231-1
GoodOver: POLE MILL CREEK
0.68 MI. WEST OF US 167, Winn, LA
Built 2002 Load: 33.4 t ADT: 569
Allbritton
GoodOver: BEECH CREEK
1.52 MI. SOUTH OF LA 124, Winn, LA
Built 2006 Load: 33.4 t ADT: 30
Union Church Rd
GoodOver: BULLS BAYOU
2.13 mi. east of LA 132, Franklin, LA
Built 2010 Load: 33.4 t ADT: 675
LA0663
GoodOver: LOURSE BAYOU
0.1 MILE EAST OF LA. 662, Assumption, LA
Built 2015 Load: 33.4 t ADT: 96
WOODLAND RIDGE BLV
GoodOver: JONES CREEK
0.7 MI S OF HARRELS FERRY, East Baton Rouge, LA
Built 2020 Load: 33.4 t ADT: 931
I0010 ON-RAMP
GoodOver: Canal No. 3 & LA 49
.4 MI EAST OF LA 49, Jefferson, LA
Built 1979 Load: 33.6 t ADT: 15,955
US0090-B
GoodOver: GROUND
0.05 MI E OF US 90, Orleans, LA
Built 1960 Load: 33.6 t ADT: 7,620
US0090-B
GoodOver: CITY STREETS
0.2 MI W OF MISS. RIVER, Orleans, LA
Built 1995 Load: 33.6 t ADT: 7,620
I0610
GoodOver: I0010
.01 MI EAST OF I-10, Orleans, LA
Built 2000 Load: 33.6 t ADT: 46,650
I0610
GoodOver: OFF RAMP TO I 610 E
.5 MI EAST OF I-10, Orleans, LA
Built 1963 Load: 33.6 t ADT: 7,620
I0510
GoodOver: R/R
0.75M NORTH GULF OUTLET, Orleans, LA
Built 1992 Load: 33.6 t ADT: 7,620
HOLLYWOOD RD
GoodOver: B TERREBONNE
0.6 MI N OF LA 664, Terrebonne, LA
Built 1976 Load: 33.6 t ADT: 15,540
US0090
GoodOver: SWAMP
.09 MI EAST OF LA 3052, Terrebonne, LA
Built 1994 Load: 33.6 t ADT: 3,007
US0090
GoodOver: ONRAMP TO 90 FROM 311
0.14 MI W OF LA 311, Terrebonne, LA
Built 1987 Load: 33.6 t ADT: 12,192
US0090
GoodOver: OFFRAMP FROM 90 TO 311
0.12 MI W OF LA 311, Terrebonne, LA
Built 1987 Load: 33.6 t ADT: 12,192
LA0095
GoodOver: BEACONS GULLY
1.45 MI EAST OF LA 104, Evangeline, LA
Built 1965 Load: 33.6 t ADT: 1,107
US0090
GoodOver: LA 329 & LDRR
0.50 Mi E of LA 14, Iberia, LA
Built 1969 Load: 33.6 t ADT: 15,262
I0049
GoodOver: E.Grolee St/MPRR
3.55 Mi S of LA 744, St. Landry, LA
Built 1983 Load: 33.6 t ADT: 15,642
US0090/Ramp C
GoodOver: 6th St.
8.9 MI EAST OF LA 182, St. Mary, LA
Built 1977 Load: 33.6 t ADT: 12,192
US0090
GoodOver: RAMP G
0.02 MI SW OF LA 182, St. Mary, LA
Built 1977 Load: 33.6 t ADT: 12,192
LA0173
GoodOver: CROSS BAYOU
0.20 MI E JCT LA 3094, Caddo, LA
Built 1983 Load: 33.6 t ADT: 15,302
LA3132
GoodOver: T. & P. RR
1.8 MI. E. OF LA 511, Caddo, LA
Built 1984 Load: 33.6 t ADT: 53,886
LA3132
GoodOver: T. & P. RR
2.4 MI. W. OF US 171, Caddo, LA
Built 1984 Load: 33.6 t ADT: 23,520
LA3132
GoodOver: US171 SPRR
2.6 MI. W. OF I-49, Caddo, LA
Built 1978 Load: 33.6 t ADT: 23,520
I0049
GoodOver: RAMPS ES & WN
RAMP SW AT LA 3132 INTG, Caddo, LA
Built 1991 Load: 33.6 t ADT: 87,567
I0049
GoodOver: I-49 OVER 63RD. STREET
I-49 @ 63RD ST (Loc Rd), Caddo, LA
Built 1988 Load: 33.6 t ADT: 28,142
I0049
GoodOver: US 79 & 80 I-20 & KCS R
.54 M. NO OF US 80, Caddo, LA
Built 1993 Load: 33.6 t ADT: 78,214
I0049
GoodOver: US 79-80 KCS SP & ICG RR
.22 MI N. OF I-49 NBL, Caddo, LA
Built 1993 Load: 33.6 t ADT: 87,567
LA0515
GoodOver: LOGGY BAYOU
2.1 MI NORTH OF LA 154, Red River, LA
Built 1980 Load: 33.6 t ADT: 203
I0020
GoodOver: DRAINAGE
2.8 MI WEST OF LA 577, Madison, LA
Built 1971 Load: 33.6 t ADT: 162
PINE BLUFF RD
GoodOver: DRAIN TO CYPRESS CREEK
2.1 MI S. HWY. 557, Ouachita, LA
Built 1985 Load: 33.6 t ADT: 431
LA0118
GoodOver: LITTLE SANDY CREEK
1.2 MI. EAST OF LA 117, Natchitoches, LA
Built 1998 Load: 33.6 t ADT: 164
Nuel Williams Rd
GoodOver: I-49
2.81 MI. NORTH OF LA 174, Natchitoches, LA
Built 1987 Load: 33.6 t ADT: 1,650
Showing 8,501-8,550 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.