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
OLD HWY 882
FairOver: JOES BAYOU
1.76 MI WEST OF SOUTH INT, East Carroll, LA
Built 1979 Load: 22.0 t ADT: 110
SONNIER RD
FairOver: CREEK
0.7 MI S OF PAUL FRANK RD, Allen, LA
Built 2010 Load: 22.0 t ADT: 50
US0190
FairOver: CREEK
5.8 MI. E OF INT LA 113, Allen, LA
Built 1931 Load: 22.0 t ADT: 3,263
US0165
FairOver: BAYOU
2.2 MI S of LA 26, Allen, LA
Built 1962 Load: 22.0 t ADT: 8,809
STEVENSON ST
FairOver: GUM CREEK
0.3 MI SOUTH OF US 90, Calcasieu, LA
Built 1968 Load: 22.0 t ADT: 207
FDR 155
FairOver: SADDLE BAYOU OVFLOW
NO DATA ENTERED, Grant, LA
Built 1962 Load: 22.0 t ADT: 15
Coldwater
FairOver: COLDWATER CREEK
APP. 3.75 MI. NW OF US 84, Winn, LA
Built 1975 Load: 22.0 t ADT: 95
Coldwater
FairOver: COLDWATER CREEK
1.25 MI. WEST OF LA 156, Winn, LA
Built 1970 Load: 22.0 t ADT: 288
I0010
FairOver: I-10 OVER LA 22
2.9 Mi. E. of LA 44, Ascension, LA
Built 1979 Load: 22.0 t ADT: 57,444
I0010
FairOver: I-10 OVER LA 22
JCT LA 22 & I-10, Ascension, LA
Built 1979 Load: 22.0 t ADT: 25,735
US0190
FairOver: BAYOU CLAUSE
4.8 M E OF LA 413, West Baton Rouge, LA
Built 2002 Load: 22.0 t ADT: 20,097
LA0010
FairOver: W FORK THOMPSON C
10.44 Mi E of US 61, West Feliciana, LA
Built 1959 Load: 22.0 t ADT: 2,392
LA0441
FairOver: DAY BRANCH
LA0441, St. Helena, LA
Built 1960 Load: 22.0 t ADT: 393
US0190
FairOver: BAYOU LACOMBE
0.12 MI NE OF LA 434, St. Tammany, LA
Built 1938 Load: 22.0 t ADT: 9,941
US0190
FairOver: CREEK
2.5 M E OF LA 434, St. Tammany, LA
Built 1933 Load: 22.0 t ADT: 11,718
Choctaw Rd
FairOver: BOGUE CHITTO R.
2.2 MI.N.OF LA 1082, Washington, LA
Built 1979 Load: 22.0 t ADT: 610
S LESTER AVE
FairOver: CANAL NO. 6
0.01 MI S OF US 61, Jefferson, LA
Built 1970 Load: 22.4 t ADT: 2,000
US0090-B
FairOver: US 90 RAMPS
0.05 NW OF US 90, Orleans, LA
Built 1960 Load: 22.4 t ADT: 7,620
KENNY STREET
FairOver: ST LOUIS CANAL
0.2 MI E OF BROADMOOR AVE, Terrebonne, LA
Built 1976 Load: 22.4 t ADT: 1,471
LA0365
FairOver: LONG POINT GULLEY
0.3 MI WEST OF LA 1109, Acadia, LA
Built 1963 Load: 22.4 t ADT: 1,570
LA0673
FairOver: DRAINAGE CANAL
0.2 MI SOUTH OF LA 85, Iberia, LA
Built 1987 Load: 22.4 t ADT: 852
Young St.
FairOver: LASALLE COULEE
1.88 Mi W of US 90, Lafayette, LA
Built 1959 Load: 22.4 t ADT: 7,700
E Stephenville Rd
FairOver: MILHOMME BAYOU
1.4 Mi NE of La 70, St. Martin, LA
Built 2001 Load: 22.4 t ADT: 756
LA0154
FairOver: FLAT RIVER
.37 MI EAST OF US 71, Bossier, LA
Built 1978 Load: 22.4 t ADT: 3,124
VALLEY VIEW DR
FairOver: AIRPORT DITCH
0.3 MI.WEST OF U.S., Caddo, LA
Built 1955 Load: 22.4 t ADT: 1,174
SLATTERY BLVD
FairOver: GILBERT DITCH
0.5 MI. EAST OF LINE, Caddo, LA
Built 1955 Load: 22.4 t ADT: 750
Bailey Town Rd
FairOver: BAILEY TN RD TR CORNEY B
7.48 MI. E. OF LA. 2, Claiborne, LA
Built 1975 Load: 22.4 t ADT: 65
Esperanza Rd
FairOver: GRAND BAYOU
1.9 M NE OF US 71, Red River, LA
Built 1991 Load: 22.4 t ADT: 207
US0080
FairOver: CREEK
1.3 MI EAST OF LA 145, Lincoln, LA
Built 1952 Load: 22.4 t ADT: 3,275
LA0554
FairOver: LITTLE BAYOU BEOUF
MOREHOUSE/OUACHITA LINE, Morehouse, LA
Built 1983 Load: 22.4 t ADT: 495
I0020
FairOver: CITY ST/ICG RR/OUACHITA
16.84 MI E LINCOLN PAR LN, Ouachita, LA
Built 1965 Load: 22.4 t ADT: 66,061
LA0372
FairOver: W FORK CANEY CR
5.2 MI S OF LA 10, Allen, LA
Built 1971 Load: 22.4 t ADT: 651
LA0027
FairOver: CREEK
7.19 MI. N OF INT LA27/11, Beauregard, LA
Built 1955 Load: 22.4 t ADT: 3,333
THIRD STREET
FairOver: BAYOU
0.6 MI E of LA 14/26, Jefferson Davis, LA
Built 1968 Load: 22.4 t ADT: 1,790
FDR 249
FairOver: LITTLE BAYOU CLEAR
NO DATA ENTERED, Rapides, LA
Built 1970 Load: 22.4 t ADT: 60
US0167
FairOver: RED RIVER/GREER ST
.1 MI. N OF INT LA1, Rapides, LA
Built 1992 Load: 22.4 t ADT: 29,200
LA0156
FairOver: LITTLE KIESCHE CREEK
7.02 MI. EAST OF LA 1233, Winn, LA
Built 1952 Load: 22.4 t ADT: 525
LA0156
FairOver: BIG KIESCHE
4.75 MI EAST OF LA 501, Winn, LA
Built 1952 Load: 22.4 t ADT: 1,582
Gum Springs
FairOver: COULEY CREEK
APP. 1 MI. NORTH OF US 84, Winn, LA
Built 1970 Load: 22.4 t ADT: 250
Coco Rd
FairOver: DRAIN BAYOU
0.1 Mi N of LA 73, Ascension, LA
Built 2014 Load: 22.4 t ADT: 50
LA0998
FairOver: BAYOU LAFOURCHE
LA0998, Assumption, LA
Built 1972 Load: 22.4 t ADT: 877
LA0408
FairOver: COMITE RIVER
2.6 M E of LA 67&LA 408, East Baton Rouge, LA
Built 1984 Load: 22.4 t ADT: 19,515
I0010
FairOver: WARDS CREEK
I0010, East Baton Rouge, LA
Built 1967 Load: 22.4 t ADT: 201,563
I0110
FairOver: CITY STREETS
1.5 M S of I-110&US 61, East Baton Rouge, LA
Built 1970 Load: 22.4 t ADT: 64,059
I0110
FairOver: CITY STREETS
1.5 M S of I-110&US 61, East Baton Rouge, LA
Built 1969 Load: 22.4 t ADT: 32,092
BLVD De Province
FairOver: DRAINAGE CANAL
BLVD. DE PROVINCE, East Baton Rouge, LA
Built 1978 Load: 22.4 t ADT: 500
Oak Villa Blvd
FairOver: JONES CREEK
1.7 M N FLORIDA BLVDUS190, East Baton Rouge, LA
Built 1998 Load: 22.4 t
LA0067
FairOver: WHITE BRANCH
1.6 M S of LA 63, East Feliciana, LA
Built 1976 Load: 22.4 t ADT: 5,772
LA0010
FairOver: THOMPSON CREEK
LA0010, East Feliciana, LA
Built 1959 Load: 22.4 t ADT: 3,675
US0190-B
FairOver: CREEK
1.2 M W OF LA 21, St. Tammany, LA
Built 1933 Load: 22.4 t ADT: 10,183
Showing 1,451-1,500 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.