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
US0190
GoodOver: DRAIN
0.7 MI EAST OF LA 757, St. Landry, LA
Built 1976 Load: 20.7 t ADT: 15,172
W. Bertheaud Ave.
GoodOver: BAYOU TESSON
0.4 Mi W. of La 182, St. Landry, LA
Built 1997 Load: 20.7 t ADT: 2,000
LA1246
GoodOver: VERMILION RIVER
0.1 MI W. OF LA 82, Vermilion, LA
Built 1992 Load: 20.7 t ADT: 80
Roy Rd
GoodOver: LOGAN BAYOU
1.4 MI. NO. OF LA 173, Caddo, LA
Built 1982 Load: 20.7 t ADT: 200
UNITED GAS RD NO 3
GoodOver: BLACK BAYOU TRIB
1.0 M EAST OF LA 1, Caddo, LA
Built 1991 Load: 20.7 t ADT: 39
WILLIAMS LANE
GoodOver: CYPRESS CREEK
LOGMILE 0.53 FR 1DE TO 2D, Richland, LA
Built 1999 Load: 20.7 t ADT: 70
ALBRITTON RD
GoodOver: FRANCIS CREEK
2.9 MI NW of LA 15, Union, LA
Built 1990 Load: 20.7 t ADT: 46
FSR 141
GoodOver: BEAVER CREEK
NO DATA ENTERED, Rapides, LA
Built 2001 Load: 20.7 t ADT: 30
NFSR 307
GoodOver: SHEARDS BRANCH
NATIONAL FOREST ROAD, Natchitoches, LA
Built 2003 Load: 20.7 t ADT: 30
FSR 555
GoodOver: LITTLE BEAR CREEK
NO DATA ENTERED, Winn, LA
Built 1999 Load: 20.7 t ADT: 100
NFSR
GoodOver: COULEY CREEK TRIBUTARY
NO DATA ENTERED, Winn, LA
Built 2002 Load: 20.7 t ADT: 50
Ussery Rd.
GoodOver: BEAR CREEK
1.09 M. W. OF US 165, Grant, LA
Built 1987 Load: 20.7 t ADT: 90
LA0118
GoodOver: GOODSON CREEK RELIEF
6.11 MILE EAST OF US 171, Sabine, LA
Built 1985 Load: 20.7 t ADT: 1,471
LA 3064
GoodOver: DAWSON CREEK
0.4 M SOUTH OF LA427, East Baton Rouge, LA
Built 2013 Load: 20.7 t ADT: 12,019
Mt Plesant Zachary
GoodOver: COOPER BAYOU
1.25 MI WEST US 61 INT., East Baton Rouge, LA
Built 1966 Load: 20.7 t ADT: 114
Peairs Rd
GoodOver: WIND BAYOU
4.1 MI.E.LA64 LA410, East Baton Rouge, LA
Built 1964 Load: 20.7 t ADT: 1,149
US0190
GoodOver: DRAIN
0.4 M E OF LA 441, Livingston, LA
Built 1932 Load: 20.7 t ADT: 4,992
US0190
GoodOver: DRAIN
1.6 M W OF LA 43, Livingston, LA
Built 1920 Load: 20.7 t ADT: 4,992
FRANCE ST
GoodOver: FLORIDA AVE.
1.5 MI.S OF US.I.10, Orleans, LA
Built 1960 Load: 20.9 t
LA0182
GoodOver: ELLIOT JONES CANAL
7.07 MI EAST OF LA 20, Terrebonne, LA
Built 1952 Load: 20.9 t ADT: 3,687
LA0182
GoodOver: DRAIN CANAL
4.4 MI WEST OF LA 315, Terrebonne, LA
Built 1952 Load: 20.9 t ADT: 3,687
Retriever Road
GoodOver: Simmons Gully
1.40 Mi. S. of LA 1115, Acadia, LA
Built 2019 Load: 20.9 t ADT: 48
LA0098
GoodOver: LONG POINT GULLY
1.3 MI EAST OF 3070, Acadia, LA
Built 1952 Load: 20.9 t ADT: 729
LA0368
GoodOver: BAYOU DES CANNES RELIEF
1.8 Mi W. of La 91, Acadia, LA
Built 1954 Load: 20.9 t ADT: 598
G. Simon Rd
GoodOver: QUE DE TORTUE
0.3 Mi N of Gib Rd, Vermilion, LA
Built 2014 Load: 20.9 t ADT: 112
LA0029
GoodOver: BAYOU BOEUF
1.87 MI. NORTH OF LA 106, Avoyelles, LA
Built 1952 Load: 20.9 t ADT: 2,321
LA0120
GoodOver: BAYOU SCIE
6.54 MI. EAST OF US 171, Sabine, LA
Built 1959 Load: 20.9 t ADT: 235
LA0127
GoodOver: LITTLE CHICKASAW
6.2 MI NORTH OF LA 503, LaSalle, LA
Built 1950 Load: 20.9 t ADT: 3,888
LA0459
GoodOver: GREENS CREEK
3.9 MI NORTH OS US 84, LaSalle, LA
Built 1958 Load: 20.9 t ADT: 1,160
LA0429
GoodOver: DUTCHTOWN DRAIN
1.9 M NE of LA 30&LA 73, Ascension, LA
Built 1957 Load: 20.9 t ADT: 9,071
LA0022
GoodOver: NEW RIVER CANAL
LA0022, Ascension, LA
Built 1959 Load: 20.9 t ADT: 11,980
LA0022
GoodOver: PIERRES DRAINAGE
1.0 M SW of LA 22&LA 16, Ascension, LA
Built 1960 Load: 20.9 t ADT: 8,068
LA0939
GoodOver: BAYOU FRANCOIS
0.8 M SE of US 61, Ascension, LA
Built 1962 Load: 20.9 t ADT: 8,203
LA0073
GoodOver: N B WARDS CREEK
LA0073, East Baton Rouge, LA
Built 1956 Load: 20.9 t ADT: 22,611
LA0064
GoodOver: HUB BAYOU
4.0 M SE of LA 64&LA 67, East Baton Rouge, LA
Built 1957 Load: 20.9 t ADT: 6,046
LA0959
GoodOver: MILL CREEK
0.6 M E of LA 959&LA 409, East Feliciana, LA
Built 1960 Load: 20.9 t ADT: 1,679
LA0441
GoodOver: BELL BRANCH
0.8 M N OF LA 1046, St. Helena, LA
Built 1957 Load: 20.9 t ADT: 584
LA0040
GoodOver: MILLS CREEK
LA0040, St. Tammany, LA
Built 1956 Load: 20.9 t ADT: 885
LA0040
GoodOver: SIMMONS CREEK
LA0040, St. Tammany, LA
Built 1956 Load: 20.9 t ADT: 885
LA1064
GoodOver: MORAN BRANCH
LA1064, Tangipahoa, LA
Built 1957 Load: 20.9 t ADT: 2,854
LA1064
GoodOver: WEST CANAL
LA 1064, Tangipahoa, LA
Built 1957 Load: 20.9 t ADT: 2,854
LA1064
GoodOver: PONCHATOULA CREEK
LA1064, Tangipahoa, LA
Built 1957 Load: 20.9 t ADT: 2,854
LA0450
GoodOver: SNELL BRANCH
LA0450, Washington, LA
Built 1957 Load: 20.9 t ADT: 319
NICOLLE BLVD
GoodOver: KELLY CANAL
1.1 MI S OF US 90, Jefferson, LA
Built 1987 Load: 21.1 t ADT: 750
Dwyer BLVD
GoodOver: CANAL
0.6MI.W.OF ALCEE FOR, Orleans, LA
Built 1960 Load: 21.1 t
LA0368
GoodOver: IRRIGATION CANAL
3.8 MI EAST OF LA 91, Acadia, LA
Built 1954 Load: 21.1 t ADT: 598
W. St. Mary Blvd.
GoodOver: COULEE
0.40 MI W of US 167, Lafayette, LA
Built 1968 Load: 21.1 t ADT: 2,400
Louisiana Ave.
GoodOver: WEBB COULEE
0.2 MI N OF LA 94, Lafayette, LA
Built 1966 Load: 21.1 t ADT: 8,600
Herman Dupuis Rd.
GoodOver: COULEE
1.6 Mi SW of LA 3177, St. Martin, LA
Built 1986 Load: 21.1 t ADT: 442
COLUMBIA STREET
GoodOver: GILBERT DITCH
0.1 MI E OF LINE AVENUE, Caddo, LA
Built 1998 Load: 21.1 t
Showing 6,501-6,550 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.