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
MUSSEL WHITE RD
FairOver: CHINQUAPIN CREEK
5.4 MI NE OF LA 26, Allen, LA
Built 1982 Load: 8.7 t ADT: 110
Jo Boy Rd
FairOver: HENDERSON BAYOU
.5 MI NE LA 44 LA 933 JCT, Ascension, LA
Built 1984 Load: 8.7 t ADT: 100
Hazelwood Rd
FairOver: HAZELWOOD GULLY
0.9 MI W of LA 1105, Acadia, LA
Built 1999 Load: 9.1 t ADT: 4
LA0103
FairOver: DRAINAGE CANAL
1 MI NORTH OF US 190, St. Landry, LA
Built 1953 Load: 9.1 t ADT: 1,349
Old Benton Rd
FairOver: Collinsburg Creek
2.5 MI. SW OF LA 3, Bossier, LA
Built 1987 Load: 9.1 t ADT: 500
Browntown Rd
FairOver: CREEK
0.47 M FR 364 TO 369, LaSalle, LA
Built 1989 Load: 9.1 t ADT: 110
LA0036
FairOver: BAYOU LACOMBE
LA0036, St. Tammany, LA
Built 1955 Load: 9.1 t ADT: 2,206
Corin Pkwy.
FairOver: BAYOU
CITY OF MANDEVILLE, St. Tammany, LA
Built 1960 Load: 9.1 t ADT: 100
LA0450
FairOver: S CARSON CREEK
1.6 M N OF LA 10, Washington, LA
Built 1958 Load: 9.1 t ADT: 1,162
Mt. Pleasant Rd
FairOver: CREEK
3.1 MI.WEST.OF.LA. 1, Washington, LA
Built 1970 Load: 9.1 t ADT: 1,170
Hickory Dr
FairOver: CANAL/CREEK
0.2M EAST OF PONTCHR, St. Tammany, LA
Built 1964 Load: 9.4 t ADT: 983
Leman Dr.
FairOver: CYPRESS CREEK
3.0 Mi N of La 106, Evangeline, LA
Built 1986 Load: 9.7 t ADT: 20
S. Lemaire Ave
FairOver: SLEDGE CANAL
0.35 Mi S of La 14, Vermilion, LA
Built 1965 Load: 9.7 t ADT: 780
WILDWOOD DR
FairOver: BAYOU MARIA TRIB.
0.09 M. N. OF SUSEK DRIVE, Rapides, LA
Built 1975 Load: 9.7 t ADT: 150
LA3252
FairOver: CHOCTAW BAYOU
.01 MI EAST OF LA 573, Tensas, LA
Built 1971 Load: 9.7 t ADT: 136
ATV TRAIL
FairOver: MACK BAYOU
MACK BAYOU (NORTH), Madison, LA
Built 1986 Load: 10.0 t ADT: 2
Rue Des Etoiles
FairOver: COULEE
.8 Mi E of St Esprit Rd, Lafayette, LA
Built 1970 Load: 10.0 t ADT: 340
Saltzman Rd
FairOver: COULEE
0.8 Mi S of La 711, Vermilion, LA
Built 1968 Load: 10.0 t ADT: 140
Shadows Lane
FairOver: TRIB TO BRUSH CREEK
0.2 MI E OF HWY 531, Webster, LA
Built 1978 Load: 10.0 t ADT: 276
TACK ALLEN RD
FairOver: DRAIN TO CYPRESS CREEK
1.1 MI. E. HWY. 557, Ouachita, LA
Built 1975 Load: 10.0 t ADT: 30
Vowells Mill Rd
FairOver: HORSEPEN CREEK
1.8 MILES WEST OF LA 117, Natchitoches, LA
Built 1990 Load: 10.0 t ADT: 42
LA0040
FairOver: MORGAN BRANCH
1.0 M E OF LA 1077, St. Tammany, LA
Built 1954 Load: 10.0 t ADT: 3,755
Bruhl Rd
FairOver: BOGUE FALAYA RIVER
1.5 M EAST OF LA 25, St. Tammany, LA
Built 1990 Load: 10.0 t ADT: 150
LA1054
FairOver: BIG CREEK
LA1054, Tangipahoa, LA
Built 1955 Load: 10.0 t ADT: 1,264
LA1048
FairOver: NATALBANY CREEK
LA1048, Tangipahoa, LA
Built 1967 Load: 10.0 t ADT: 883
LA0438
FairOver: HAY CREEK
LA0438, Washington, LA
Built 1959 Load: 10.0 t ADT: 659
LA0439
FairOver: BENS CREEK
10.6 Mi SE of LA 10, Washington, LA
Built 1955 Load: 10.0 t ADT: 1,235
Thigpen Rd
FairOver: BRIDGE OVER BOGALUSA CR.
.94 MI W OF HWY 45, Washington, LA
Built 1999 Load: 10.0 t ADT: 469
LOUISIANA AVENUE
FairOver: KCS RAILROAD
FT. POLK LA, Vernon, LA
Built 1978 Load: 10.0 t ADT: 4,500
Bankston Rd
FairOver: CREEK
3.2 MI SE OF SR 16 E, Tangipahoa, LA
Built 1975 Load: 10.2 t ADT: 551
LA0399
FairOver: CREEK
.44 MI NORTH OF LA 458, Vernon, LA
Built 1943 Load: 10.3 t ADT: 396
Coons Rd
FairOver: BIG FOUR DITCH
.7 Mi E of Ellis Bridge R, Vermilion, LA
Built 1978 Load: 10.4 t ADT: 30
Gilbert at Fern
FairOver: OCKLEY DITCH
1.1 MI. NO.OF PIERRE, Caddo, LA
Built 1964 Load: 10.4 t ADT: 2,480
ARDOIN CEMETERY RD
FairOver: CREEK
0.5 MI S of ABELL RD, Jefferson Davis, LA
Built 1978 Load: 10.4 t ADT: 40
BRYAN RD
FairOver: GULLY
0.3 MI E of LA 99, Jefferson Davis, LA
Built 1979 Load: 10.4 t ADT: 30
Carrey St
FairOver: CREEK
0.35 MI NE OF US 11, St. Tammany, LA
Built 1960 Load: 10.4 t
CARL HOPPE ROAD
FairOver: BAYOU
1.7 MI W of US 165, Jefferson Davis, LA
Built 1980 Load: 10.7 t ADT: 30
ABBIE FONTENOT RD.
FairOver: BAYOU
1.0 MI E of LA 383, Jefferson Davis, LA
Built 1980 Load: 10.7 t ADT: 130
Ian Johnson Rd
FairOver: LITTLE INDIAN CREEK
0.7 MI. SW OF LA 28, Rapides, LA
Built 1992 Load: 10.7 t ADT: 125
HEMBLING DR
FairOver: UNNAMED STREAM
0.05 MI. SOUTH OF LA 28, Rapides, LA
Built 1970 Load: 10.7 t ADT: 200
Olive St
FairOver: CREEK
0.4MI.EASTOF PONCH D, St. Tammany, LA
Built 1960 Load: 10.7 t
Coffee St
FairOver: CREEK
0.2MI.N.OF LAKE SHOR, St. Tammany, LA
Built 1970 Load: 10.7 t
LA0182
FairOver: BAYOU BLACK
.01 MI EAST OF LA 20, Terrebonne, LA
Built 1946 Load: 10.9 t ADT: 3,687
LA0014-B
FairOver: VERMILION R/ABBEVILLE
0.13 MI W OF US 167, Vermilion, LA
Built 1938 Load: 10.9 t ADT: 7,662
S. 6TH ST
FairOver: DRAIN TO GARRETT CREEK
.6 MI. W. INT. 006, Jackson, LA
Built 1984 Load: 10.9 t ADT: 378
ARKADELPHIA RD
FairOver: SIX MILE CREEK RELIEF
3.9 MI WEST OF LA 377, Allen, LA
Built 1975 Load: 10.9 t ADT: 260
SONNY FONTENOT RD
FairOver: CANAL
0.1 MI E OF S. THOMPSON R, Calcasieu, LA
Built 1995 Load: 10.9 t ADT: 150
RILEY FRAZIER RD
FairOver: CREEK
0.2 MI W OF INT LA 389, Calcasieu, LA
Built 1996 Load: 10.9 t ADT: 200
Kirby Rd
FairOver: CREEK
1 mile NE of LA 459, LaSalle, LA
Built 1975 Load: 10.9 t ADT: 100
Monceaux Rd
FairOver: BIG FOUR DITCH
1.1 Mi W of La 332, Vermilion, LA
Built 1960 Load: 11.0 t ADT: 40
Showing 51-100 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.