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
E Douglas St
GoodOver: DRAINAGE BAYOU
.10 MILES SOUTH LA 3038, Ascension, LA
Built 1995 Load: 22.7 t ADT: 20
LA0070
GoodOver: BAYOU CORNE
LA0070, Assumption, LA
Built 1960 Load: 22.7 t ADT: 6,842
LA0070
GoodOver: BAYOU VALERIE
2.5 M W of LA 69&LA 70, Assumption, LA
Built 1960 Load: 22.7 t ADT: 6,842
US0190
GoodOver: LIVELY BAYOU
US0190, East Baton Rouge, LA
Built 1958 Load: 22.7 t ADT: 19,515
LA0408
GoodOver: BAYOU
0.1 M E of I-110&LA 408, East Baton Rouge, LA
Built 1976 Load: 22.7 t ADT: 26,976
Stewart Ln
GoodOver: UNNAMED CREEK
1.7 MI SW LA67 LA422 JCT, East Feliciana, LA
Built 1999 Load: 22.7 t ADT: 14
US0061
GoodOver: DRAIN CANAL
6.27 M W of LA 641, St. James, LA
Built 1954 Load: 22.7 t ADT: 8,171
LA0620
GoodOver: CHAMBERLAIN CANAL
1.2 M W of LA 415, West Baton Rouge, LA
Built 1958 Load: 22.7 t ADT: 2,107
LA0447
GoodOver: WILLIS BAYOU
0.2 M N OF LA 16, Livingston, LA
Built 1962 Load: 22.7 t ADT: 34,245
LA0447
GoodOver: DRAIN
2.0 M N OF LA 16, Livingston, LA
Built 1962 Load: 22.7 t ADT: 34,245
LA0447
GoodOver: WEST COLYELL CR
LA0447, Livingston, LA
Built 1962 Load: 22.7 t ADT: 34,245
LA0021
GoodOver: MARIAS CREEK
.45 MI N JCT LA21 & LA16, St. Tammany, LA
Built 1987 Load: 22.7 t ADT: 7,160
RIVER ROAD
GoodOver: SKULL CREEK
0.09 MI N OF US 90, Tangipahoa, LA
Built 1963 Load: 22.7 t ADT: 2,400
LA0025
GoodOver: W BOGUE FALAYA
LA0025, Washington, LA
Built 1964 Load: 22.7 t ADT: 4,905
LA0025
GoodOver: DANIEL BRANCH
LA0025, Washington, LA
Built 1964 Load: 22.7 t ADT: 4,905
LA0025
GoodOver: BONNER CREEK
LA0025, Washington, LA
Built 1964 Load: 22.7 t ADT: 4,905
LA0025
GoodOver: DRAIN
0.3 M S OF LA 16, Washington, LA
Built 1964 Load: 22.7 t ADT: 4,905
LA0025
GoodOver: BICKHAM BRANCH
LA0025, Washington, LA
Built 1963 Load: 22.7 t ADT: 2,272
LA0025
GoodOver: MILL CREEK
0.8 M S OF LA 438, Washington, LA
Built 1963 Load: 22.7 t ADT: 2,272
W Napolean
GoodOver: Canal 4
.1 mile east of David, Jefferson, LA
Built 1999 Load: 23.0 t ADT: 2,146
English Turn PKWY
GoodOver: DRAIN CANAL
1.0 MI. E. OF LA 406, Orleans, LA
Built 1987 Load: 23.0 t
LA0024
GoodOver: BAYOU CANE
LA0024, Terrebonne, LA
Built 1960 Load: 23.0 t ADT: 23,871
W. Coleman St.
GoodOver: Bayou Tesson
0.4 Mi W. of La 182, St. Landry, LA
Built 1965 Load: 23.0 t ADT: 500
Poole Rd
GoodOver: Flat River
5.3 MILES EAST OF US 71, Bossier, LA
Built 2011 Load: 23.0 t ADT: 100
LA0001
GoodOver: CREEK
.1 MI NORTH OF LA 173, Caddo, LA
Built 1940 Load: 23.0 t ADT: 14,847
LA0004
GoodOver: CREEK
8.3 MI EAST OF LA 505, Jackson, LA
Built 2005 Load: 23.0 t ADT: 2,246
SHELTON CUTOFF RD
GoodOver: DRAIN TO CYPRESS CREEK
0.9 MI N INT 444, Morehouse, LA
Built 1988 Load: 23.0 t ADT: 170
TISDALE RD
GoodOver: HURRICANE CREEK
1.82 MI SW of LA 548, Ouachita, LA
Built 1994 Load: 23.0 t ADT: 372
COOK RD
GoodOver: TURKEY CREEK
1.3 MI W of LA 17, Richland, LA
Built 1999 Load: 23.0 t ADT: 80
COLLINS DRIVE
GoodOver: TURKEY CREEK
1.7 MI W of LA 17, Richland, LA
Built 2007 Load: 23.0 t ADT: 350
US0165
GoodOver: FISH CREEK
1.39 MI. SOUTH OF LA 123, Grant, LA
Built 2007 Load: 23.0 t ADT: 6,586
LA0494
GoodOver: CANE RIVER
INT. LA 6B & LA 494 NATC, Natchitoches, LA
Built 2003 Load: 23.0 t ADT: 21,589
US0071
GoodOver: UP RAILROAD
.3 MI. N OF INT I-49, Rapides, LA
Built 2003 Load: 23.0 t ADT: 14,994
Mill St
GoodOver: HYNSON BAYOU
MILL STREET, Rapides, LA
Built 1989 Load: 23.0 t ADT: 50
LA0095
GoodOver: DRAIN
0.85 MI NORTH OF LA 35, Acadia, LA
Built 1949 Load: 23.3 t ADT: 1,664
Ida Missionary Rd
GoodOver: KELLY BAYOU
1.8M EAST OF US 71, Caddo, LA
Built 1994 Load: 23.3 t ADT: 200
18TH ST AT DESIARD
GoodOver: DRAINAGE CANAL
0.7 MI NW of I-20, Ouachita, LA
Built 1996 Load: 23.3 t ADT: 100,000
OLIVER RD
GoodOver: BRYANT BRANCH
1.1 MI NW of I-20, Ouachita, LA
Built 2003 Load: 23.3 t ADT: 4,000
GUIDRY RD
GoodOver: NEZIPIQUE BAYOU RELIEF
1.5 MI N of LA1159, Allen, LA
Built 2011 Load: 23.3 t ADT: 36
N CARPENTERS BR RD
GoodOver: FLAT CREEK RELIEF
3.7 MI SOUTH OF LA 26, Allen, LA
Built 2010 Load: 23.3 t ADT: 250
US0071
GoodOver: US 71 FRONTAGE ROAD LA
0.64 MI. NE OF LA 498, Rapides, LA
Built 1996 Load: 23.3 t ADT: 29,767
PROSPECT RD
GoodOver: NASHES CREEK
4.07 MI. SOUTH OF LA 474, Sabine, LA
Built 1985 Load: 23.3 t ADT: 300
BELSHA RD
GoodOver: DOWDEN CREEK RELIEF
1.3 MILES NORTH OF LA 111, Vernon, LA
Built 2001 Load: 23.3 t ADT: 100
Peachland Lane
GoodOver: HIBBS BAYOU
2.2 W of La 124, Catahoula, LA
Built 1989 Load: 23.3 t ADT: 40
LA0460
GoodOver: CREEK
6.7 MI EAST OF LA 127, LaSalle, LA
Built 1978 Load: 23.3 t ADT: 776
Lee Dr
GoodOver: BAYOU PIERRE PART
1.1 MILES S/W OF LA 70, Assumption, LA
Built 2007 Load: 23.3 t ADT: 672
Pride-Baywood Rd
GoodOver: DRAINAGE CANAL
0.2 MI. E. of LA 409, East Baton Rouge, LA
Built 1967 Load: 23.3 t ADT: 1,118
Pride-Baywood Rd
GoodOver: WEST BRANCH MILL CREEK
6.8 MI.NNE.LA37 LA40, East Baton Rouge, LA
Built 1967 Load: 23.3 t ADT: 1,118
Straughan Nursery
GoodOver: SCOTT CREEK
1.6 MI NW OF JCT 40&1062, Tangipahoa, LA
Built 2006 Load: 23.3 t ADT: 175
LA0368
GoodOver: CREEK
0.3 MI SE OF LA 755, Acadia, LA
Built 1962 Load: 23.6 t ADT: 394
Showing 6,651-6,700 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.