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
Woodmill Rd
FairOver: TRIB TO TANYARD CREEK
0.1 MI W OF HWY 7, Webster, LA
Built 1978 Load: 25.4 t ADT: 247
LA0544
FairOver: WAFER CREEK
1.6 MI EAST OF LA 3074, Lincoln, LA
Built 1954 Load: 25.4 t ADT: 11,636
LA3005
FairOver: REDWINE CREEK
.12 MI WEST OF US 80, Lincoln, LA
Built 1957 Load: 25.4 t ADT: 917
US0080
FairOver: ROUNDAWAY BAYOU
10.2 MI EAST OF LA 577, Madison, LA
Built 1955 Load: 25.4 t ADT: 1,558
LA0151
FairOver: CREEK
1.22 MI NORTH OF LA 546, Ouachita, LA
Built 1958 Load: 25.4 t ADT: 2,828
LA0151
FairOver: CREEK
1.87 MI NORTH OF LA 546, Ouachita, LA
Built 1958 Load: 25.4 t ADT: 2,828
LA0838
FairOver: CREEK
5.21 MI EAST OF LA 546, Ouachita, LA
Built 1955 Load: 25.4 t ADT: 8,105
STATEPRK
FairOver: CANAL
0.3 MI EAST OF LA 17, Richland, LA
Built 2004 Load: 25.4 t ADT: 300
VENABLE RD
FairOver: I-20
1.74 MI EAST OF LA 133, Richland, LA
Built 1968 Load: 25.4 t ADT: 3,010
LA0550
FairOver: CAMP CREEK
8.5 MI NORTH OF LA 2, Union, LA
Built 1956 Load: 25.4 t ADT: 464
PIERSON RD
FairOver: CREEK
0.1 M W OF K. CEM. RD, Allen, LA
Built 1973 Load: 25.4 t ADT: 130
N. ALLADIN RD.
FairOver: CANAL
0.05 MI. W. OF INT. LA 27, Cameron, LA
Built 1964 Load: 25.4 t ADT: 90
LAKE BREEZE RD.
FairOver: CANAL
0.1 MI. E. OF INT. LA 27, Cameron, LA
Built 1964 Load: 25.4 t ADT: 832
LA0117
FairOver: MIDDLE CREEK
6.99 MI N OF JCT 118, Natchitoches, LA
Built 1955 Load: 25.4 t ADT: 1,513
LA0916
FairOver: BLACK BAYOU
1.7 MI N OF LA 8, Catahoula, LA
Built 1965 Load: 25.4 t ADT: 55
LA3164
FairOver: I-110
1.0 Mi S of US 190 Bus, East Baton Rouge, LA
Built 1969 Load: 25.4 t ADT: 5,860
Beechgrove Rd
FairOver: OPOSSUM BAYOU
4.8 MI N OF CLINTON, East Feliciana, LA
Built 2003 Load: 25.4 t ADT: 110
LA0421
FairOver: MILL CREEK
LA0421, West Feliciana, LA
Built 1968 Load: 25.4 t ADT: 739
LA1024
FairOver: CREEK
1.1 M W OF LA 1019, Livingston, LA
Built 1962 Load: 25.4 t ADT: 1,020
LA1047
FairOver: BENTON BRANCH
0.3 M E OF LA 441, St. Helena, LA
Built 1957 Load: 25.4 t ADT: 287
LA0016
FairOver: TALLEYS CREEK
LA0016, St. Tammany, LA
Built 1968 Load: 25.4 t ADT: 1,388
BROWNSWITCH RD
FairOver: I-59
0.4 MI E OF LA 1091, St. Tammany, LA
Built 1966 Load: 25.4 t ADT: 20,400
US0051
FairOver: BEAVER CREEK
0.5 Miles North of LA 440, Tangipahoa, LA
Built 1935 Load: 25.4 t ADT: 2,266
US0051
FairOver: TERRYS CREEK
US0051, Tangipahoa, LA
Built 1935 Load: 25.4 t ADT: 2,403
LA0022
FairOver: DRAIN
3.7 M E OF US 51, Tangipahoa, LA
Built 1938 Load: 25.4 t ADT: 12,900
LA0038
FairOver: LITTLE SILVER CR
4.3 M E OF LA 1061, Tangipahoa, LA
Built 1961 Load: 25.4 t ADT: 1,648
LA0442
FairOver: NATALBANY RIVER
LA0442, Tangipahoa, LA
Built 1963 Load: 25.4 t ADT: 5,026
LA1074
FairOver: WRIGHTS CREEK
1.4 M W OF LA 1075, Washington, LA
Built 1958 Load: 25.4 t ADT: 1,186
LA0439
FairOver: DRAIN
2.4 M W OF LA 60, Washington, LA
Built 1955 Load: 25.4 t ADT: 1,235
LA3235
FairOver: WETLANDS
S OF LEEVILLE TO JCT LA1, Lafourche, LA
Built 2012 Load: 25.6 t ADT: 3,305
HARRISON AVE
FairOver: CITY PARK LAGOON
0.1MI.W.OF WISNER BL, Orleans, LA
Built 1939 Load: 25.6 t
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 25.6 t ADT: 259
E WOODLAWN RANCH R
FairOver: PETIT GAILLOU BAYOU
1.2 MI E OF LA 57, Terrebonne, LA
Built 2011 Load: 25.6 t ADT: 2,248
Meche Rd.
FairOver: CARENCRO BAYOU
1.08 Mi N of LA 1252, Lafayette, LA
Built 1982 Load: 25.6 t ADT: 360
Solid Waste Rd
FairOver: BAYOU BOEUF
0.1 MI N JCT LA 10-LA 182, St. Landry, LA
Built 1986 Load: 25.6 t ADT: 2,250
LA0014
FairOver: VALCOURT COULEE
0.39 MI W. OF UA 167, Vermilion, LA
Built 1967 Load: 25.6 t ADT: 19,800
Guegnon St.
FairOver: YOUNGS SOUTH COULEE
0.95 M. S. of LA 3267, Vermilion, LA
Built 1965 Load: 25.6 t ADT: 250
LA0002
FairOver: DRAIN
.19 MI EAST OF LA 3, Bossier, LA
Built 1960 Load: 25.6 t ADT: 4,236
LA0169
FairOver: CREEK
7.2 MI NORTH OF LA 172, Caddo, LA
Built 1984 Load: 25.6 t ADT: 1,540
DUDLEY DRIVE
FairOver: OCKLEY DITCH
2.3 MI N OF LA 511, Caddo, LA
Built 1988 Load: 25.6 t ADT: 200
Mt. Olive Rd
FairOver: PANTHER CREEK
2.2 MILES WEST OF LA 9, Claiborne, LA
Built 2009 Load: 25.6 t ADT: 85
US0084
FairOver: BAGET CREEK
5.9 MI EAST OF LA 763, De Soto, LA
Built 1949 Load: 25.6 t ADT: 4,394
GOODGOIN RD
FairOver: STOWE CREEK
1.2 MILES EAST OF LA33, Lincoln, LA
Built 2013 Load: 25.6 t ADT: 102
RED CUT RD
FairOver: WATSON BRANCH
MI E HWY 557, Ouachita, LA
Built 1981 Load: 25.6 t ADT: 270
US0167
FairOver: MIDDLE FORK BAYOU
1.4 MI SOUTH OF SOUTH INT, Union, LA
Built 1952 Load: 25.6 t ADT: 422
1ST PENT CHURCH RD
FairOver: WILD COW CREEK
2.4 MI WEST OF US 171, Beauregard, LA
Built 2006 Load: 25.6 t ADT: 275
1ST PENT CHURCH RD
FairOver: COLE CREEK
2.7 MI W of US 171, Beauregard, LA
Built 2005 Load: 25.6 t ADT: 275
LOUIS ALLEMAN PKWY
FairOver: FARMERS L AND C CANAL
0.3 MI EAST OF LA 27, Calcasieu, LA
Built 2000 Load: 25.6 t ADT: 100
OLD SPANISH TRAIL
FairOver: CREEK
3.2 MI WEST OF LA 379, Calcasieu, LA
Built 1995 Load: 25.6 t ADT: 5,829
LA3086
FairOver: BAYOU
2.7 MI N OF LA 99/102, Jefferson Davis, LA
Built 1974 Load: 25.6 t ADT: 369
Showing 2,051-2,100 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.