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
Texada Rd
GoodOver: BAYOU RAPIDES
0.01 MI N OF BELGARD BEND, Rapides, LA
Built 2010 Load: 36.9 t ADT: 400
LA0008
GoodOver: CREEK
5.68 MI. E OF E JCT. LA 4, Vernon, LA
Built 2012 Load: 36.9 t ADT: 5,978
LA0008
GoodOver: CREEK
5.53 MI. E OF E JCT. LA 4, Vernon, LA
Built 2012 Load: 36.9 t ADT: 5,978
Frank White
GoodOver: PORT DE LUCE CREEK
1.3 MI SOUTH US 84 WEST, Winn, LA
Built 2005 Load: 36.9 t ADT: 250
LA0066
GoodOver: BELL CREEK
1.5 MILES NORTH OF LA 968, West Feliciana, LA
Built 2011 Load: 36.9 t ADT: 1,677
LA0066
GoodOver: CEDAR CREEK
6.5 MILES NORTH OF LA 968, West Feliciana, LA
Built 2010 Load: 36.9 t ADT: 1,677
LA0066
GoodOver: BOARD HOLLOW
5.5 MILES S.W. OF JCT. LA, West Feliciana, LA
Built 2011 Load: 36.9 t ADT: 1,417
Travis Rd
GoodOver: TAYLOR CREEK
1.0 MILES WEST OF ETHEL L, St. Helena, LA
Built 2010 Load: 36.9 t ADT: 125
Hidden Oaks Dr
GoodOver: CREEK
0.5 MILES NORTH OF GAUSE, St. Tammany, LA
Built 2012 Load: 36.9 t ADT: 100
Bennett Rd
GoodOver: NATALBANY CREEK
1.7 MILES SOUTHEAST OF LA, Tangipahoa, LA
Built 2010 Load: 36.9 t ADT: 320
Z. McDaniel Rd
GoodOver: REEDY BRANCH
5.0 MILES NORTHEAST OF JC, Tangipahoa, LA
Built 2010 Load: 36.9 t ADT: 300
Sisters Rd
GoodOver: Selsers Creek
1.5 Mi N. of LA 22, Tangipahoa, LA
Built 2022 Load: 36.9 t ADT: 3,345
LA1057
GoodOver: DRAIN
LA. 1057, Tangipahoa, LA
Built 1965 Load: 36.9 t ADT: 1,695
N. Hayes Rd
GoodOver: IRVING BRANCH
2.4 MI N OF JCT 38 & 1054, Tangipahoa, LA
Built 2006 Load: 36.9 t ADT: 83
LA3139
GoodOver: ICC.G. RR
.7 MI EAST OF LA 3154, Jefferson, LA
Built 1977 Load: 37.2 t ADT: 12,192
US0090-B
GoodOver: CITY STREETS
2.07 MI SOUTH OF I-10, Orleans, LA
Built 1995 Load: 37.2 t ADT: 7,620
US0090-B
GoodOver: CITY STREETS TRANSIT RAM
2.3 MI SOUTH OF I-10, Orleans, LA
Built 1995 Load: 37.2 t ADT: 7,620
US0090-B
GoodOver: LA.428 US.90 W/B POLICE
1.7 MI SOUTH OF MISS. RIV, Orleans, LA
Built 1993 Load: 37.2 t ADT: 7,620
US0090-B
GoodOver: LA 428/US 90B/RAMPS/STS
1.74 MI SOUTH OF MISS. RI, Orleans, LA
Built 1989 Load: 37.2 t ADT: 7,620
US0090-B
GoodOver: GROUND
1.2 MI. E. OF MISS RIVER, Orleans, LA
Built 1995 Load: 37.2 t ADT: 7,620
US0090-B
GoodOver: LA 428
1.88 MI SOUTH OF MISS. RI, Orleans, LA
Built 1993 Load: 37.2 t ADT: 7,620
I0610
GoodOver: ON RP FROM GENTILLY BLVD
3.3 MI EAST OF I-10, Orleans, LA
Built 1974 Load: 37.2 t ADT: 7,620
I0510
GoodOver: GROUND
1.02 MT.N.OF BEG.OF CONT., Orleans, LA
Built 1993 Load: 37.2 t ADT: 7,620
I0010
GoodOver: I-10 OVER US 90(CHEF HWY
6.3 MI WEST OF LA 47, Orleans, LA
Built 1967 Load: 37.2 t ADT: 1,600
LA0406
GoodOver: INDUSTRY CANAL
3.11 MI NORTH OF LA 23, Plaquemines, LA
Built 1977 Load: 37.2 t ADT: 12,412
I0310
GoodOver: I-310 RAMP OVER I-10
0.01 M NORTH OF I-10 WB, St. Charles, LA
Built 1992 Load: 37.2 t ADT: 15,642
St. Esprit Rd.
GoodOver: Coulee
.4 Mi N of W Musique Rd, Lafayette, LA
Built 2007 Load: 37.2 t ADT: 1,082
I0049
GoodOver: JUDSON WALSH ROAD
1.51 Mi N of LA 3233, St. Landry, LA
Built 1982 Load: 37.2 t ADT: 44,138
I0049
GoodOver: JUDSON WALSH ROAD
1.26 Mi S of LA 31, St. Landry, LA
Built 1982 Load: 37.2 t ADT: 25,609
I0010
GoodOver: ATCHAFALAYA FLOODWAY
11.6 MI EAST OF LA 347, St. Martin, LA
Built 1991 Load: 37.2 t ADT: 23,521
LA0347
GoodOver: NICHOLAS COULEE
1.8 MI E of LA 347, St. Martin, LA
Built 1979 Load: 37.2 t ADT: 6,880
US0090
GoodOver: LA 83 S.P. RR
4.6 MI E OF LA 318, St. Mary, LA
Built 1978 Load: 37.2 t ADT: 16,253
US0090
GoodOver: 7th Street
1.34 Mi. E. of 182 US 90, St. Mary, LA
Built 1977 Load: 37.2 t ADT: 12,192
LA0147
GoodOver: CHOCTAW CREEK
2.5 MI NORTH OF LA 155, Bienville, LA
Built 1980 Load: 37.2 t ADT: 1,988
LA0001
GoodOver: KCS RAILROAD
0.43MI NW OF INT. LA 538, Caddo, LA
Built 1994 Load: 37.2 t ADT: 2,007
I0049
GoodOver: HOLLYWOOD AVENUE
0.9 MI N. OF LA 511, Caddo, LA
Built 1993 Load: 37.2 t ADT: 28,142
I0049
GoodOver: OCKLEY DRIVE
1.9 MILES N. OF LA 511, Caddo, LA
Built 1994 Load: 37.2 t ADT: 87,568
I0049
GoodOver: OCKLEY DRIVE
1.9 MILES N. OF LA 511, Caddo, LA
Built 1994 Load: 37.2 t ADT: 28,142
POWER PLANT RD
GoodOver: NABARTON ROAD OVER I-49
1.3 MI S OF US 84 INTR., De Soto, LA
Built 1987 Load: 37.2 t ADT: 1,460
I0049
GoodOver: I-49 OVER LA 175
2.42 MI. N. OF LA 5, De Soto, LA
Built 1986 Load: 37.2 t ADT: 29,022
LA0034
GoodOver: EDWARDS BRANCH
0.58 MI E of LA 4, Jackson, LA
Built 2002 Load: 37.2 t ADT: 2,974
LA0034
GoodOver: CASTOR CREEK
1.16 MI E of LA 4, Jackson, LA
Built 2002 Load: 37.2 t ADT: 2,974
LA0834
GoodOver: BAYOU BARTHOLOMEW
7.96 MI EAST OF LA 591, Morehouse, LA
Built 1980 Load: 37.2 t ADT: 61
LA0015
GoodOver: CHOUDRANT CREEK
4.7 MI NORTH OF LA 616, Ouachita, LA
Built 1979 Load: 37.2 t ADT: 6,512
LA0143
GoodOver: TUPAWEK BAYOU
.3 MI NORTH OF LA 616, Ouachita, LA
Built 1996 Load: 37.2 t ADT: 12,648
US0071
GoodOver: UNION PACIFIC RAILROAD
0.82 M N OF S JCT LA 1177, Avoyelles, LA
Built 1984 Load: 37.2 t ADT: 3,654
LA0107
GoodOver: BAYOU DES GLAISE
0.9 MILE NORTH OF LA 29, Avoyelles, LA
Built 1977 Load: 37.2 t ADT: 6,887
LA0107
GoodOver: BAYOU DES CYPRAIRRES
1.68 MILES NORTH OF LA 29, Avoyelles, LA
Built 1977 Load: 37.2 t ADT: 6,887
I0049
GoodOver: LA 490
I-49/LA 490 INTG., Natchitoches, LA
Built 1985 Load: 37.2 t ADT: 18,305
I0049
GoodOver: LA 490
I-49/LA 490 INTG., Natchitoches, LA
Built 1985 Load: 37.2 t ADT: 28,142
Showing 9,151-9,200 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.