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
LA0107
FairOver: BAYOU MARIA
3.58 MI. NORTH OF LA 3128, Rapides, LA
Built 1953 Load: 20.1 t ADT: 3,354
LA0107
FairOver: BAYOU MARIA RELIEF
3.86 MI. NORTH OF LA 3128, Rapides, LA
Built 1953 Load: 20.1 t ADT: 3,354
Stevenson Rd
FairOver: DRAINAGE BAYOU
1.1 MI S DUTCHTOWN, Ascension, LA
Built 1970 Load: 20.1 t ADT: 400
PERKINS RD 427
FairOver: DAWSON CREEK
1.69 M. NE OF LA 3064, East Baton Rouge, LA
Built 1986 Load: 20.1 t ADT: 33,600
Old Hammond Hwy
FairOver: LIVELY BAYOU
2.4 Miles E of US61, East Baton Rouge, LA
Built 1958 Load: 20.1 t ADT: 7,800
LA0423
FairOver: CYPRESS BAYOU
LA0423, East Baton Rouge, LA
Built 1957 Load: 20.1 t ADT: 6,448
Morgan Meadow Ave
FairOver: DRAINAGE BAYOU
0.8 MI S. OF CENTRAL, East Baton Rouge, LA
Built 1980 Load: 20.1 t ADT: 831
Devall Rd
FairOver: DRAINAGE CANAL
0.8 Mi N of LA 408, East Baton Rouge, LA
Built 1967 Load: 20.1 t ADT: 2,092
LA0037
FairOver: LILLYS CREEK
0.5 Mi. N. of LA 63, East Feliciana, LA
Built 1955 Load: 20.1 t ADT: 3,362
I0010
FairOver: UP Railroad
3.8 M W of LA 3000, Iberville, LA
Built 1972 Load: 20.1 t ADT: 58,734
I0010
FairOver: UP Railroad
I0010, Iberville, LA
Built 1972 Load: 20.1 t ADT: 298
BY GROSSE TETE XNG
FairOver: BAYOU GROSSE TETE
0.01 MI. W OF LA 411, Iberville, LA
Built 1967 Load: 20.1 t ADT: 960
LA0983
FairOver: BAYOU CHENAL
0.27 M W of LA 416, Pointe Coupee, LA
Built 1956 Load: 20.1 t ADT: 2,823
US0061
FairOver: BLIND RIVER
3.74 M W of LA 641, St. James, LA
Built 1977 Load: 20.1 t ADT: 14,957
N. Blvd.
FairOver: CANAL
1.0 MILE SOUTH OF I 12 OF, St. Tammany, LA
Built 1974 Load: 20.1 t ADT: 500
Edwin Neill way
FairOver: CREEK
1 MI SE OF RT 190 EX, Tangipahoa, LA
Built 1975 Load: 20.1 t ADT: 298
Harvey Rd
FairOver: HAYS CREEK
2.05 MI. N OF HWG. 430, Washington, LA
Built 1981 Load: 20.1 t ADT: 688
LA0018
FairOver: HARVEY CANAL
.05 MI EAST OF LA 3018, Jefferson, LA
Built 1975 Load: 20.4 t ADT: 9,678
Destrehan Ave
FairOver: COUSINS CANAL
0.4 MI NE OF LONG LEAF LN, Jefferson, LA
Built 2005 Load: 20.4 t ADT: 2,000
LAPALCO BLVD
FairOver: WEYRAUCH CANAL
0.6MI.E.OF MANHATTAN, Jefferson, LA
Built 1971 Load: 20.4 t ADT: 50,000
US0090
FairOver: US 90 OVER LA 316
US 90 OVER LA 316, Lafourche, LA
Built 1980 Load: 20.4 t ADT: 11,400
BARRIOS STREET
FairOver: FORTY ARPENT CANAL
0.3 MI W. OF LA 1, Lafourche, LA
Built 1969 Load: 20.4 t ADT: 706
I0010
FairOver: SER RD/UPT/US90-B
3.14 MI EAST OF I-610, Orleans, LA
Built 1960 Load: 20.4 t ADT: 67,143
Crowder BLVD
FairOver: DRAINAGE CANAL
0.75 MI SE OF LA 47, Orleans, LA
Built 1975 Load: 20.4 t
Crowder BLVD
FairOver: DRAINAGE CANAL
0.75 MI SE OF LA 47, Orleans, LA
Built 1975 Load: 20.4 t
LA0024
FairOver: LITTLE CAILLOU
0.01 MI S OF LA 659, Terrebonne, LA
Built 1941 Load: 20.4 t ADT: 8,922
CHURCH ST
FairOver: BAYOU TERREBONNE
CITY OF HOUMA, Terrebonne, LA
Built 1979 Load: 20.4 t ADT: 4,110
SAVANNE RD
FairOver: OUISKI BAYOU
0374 LOG MI FROM IN, Terrebonne, LA
Built 1972 Load: 20.4 t ADT: 7,455
Carrera Ln
FairOver: COULEE
0.01 MI NORTH OF LA 3123, Acadia, LA
Built 1976 Load: 20.4 t ADT: 240
Baldridge Rd.
FairOver: BLACK LAKE BAYOU
0.25 Mi NW of La 106, Evangeline, LA
Built 1997 Load: 20.4 t ADT: 11
Rus Des Babineaux
FairOver: COULEE
0.4 Mi W of LA 93, Lafayette, LA
Built 1979 Load: 20.4 t ADT: 500
Vick Rd
FairOver: COULEE
0.2 Mi S of Saltzman Rd, Vermilion, LA
Built 1970 Load: 20.4 t ADT: 25
LA0529
FairOver: BEAR BRANCH
3.73 MI NORTH OF LA 160, Bossier, LA
Built 1973 Load: 20.4 t ADT: 590
Seven Pines Rd
FairOver: Caney Creek
3.5 MI S OF HWY 160, Bossier, LA
Built 1977 Load: 20.4 t ADT: 250
Keatchie-Marshall
FairOver: KECHI MRSHS TRBY BSHNK B
0.9 MI. EAST OF LA 169, Caddo, LA
Built 1985 Load: 20.4 t ADT: 40
KEATCHIE-MARSHALL
FairOver: TRIB.MILL CR.KECHI-MARSH
I.8 MI. WEST OF LA 169, Caddo, LA
Built 1984 Load: 20.4 t ADT: 60
Keithvil-Sprrdg Rd
FairOver: KHVL SPRDG RD TRB.BUCHN.
2.4 M.W. OLD MANSFIE, Caddo, LA
Built 1975 Load: 20.4 t ADT: 140
Cook Rd
FairOver: BOGGY BAYOU TRIB
0.5M SOUTH OF CADDO RD 8, Caddo, LA
Built 1992 Load: 20.4 t ADT: 38
Blanchard Latex Rd
FairOver: CHOCTAW BAYOU
3.6 M EAST OF LA 169, Caddo, LA
Built 1989 Load: 20.4 t ADT: 78
ATLANTA-VIVIAN RD
FairOver: MYRTIS MILL CREEK
2.99 MI W OF LA 1, Caddo, LA
Built 1984 Load: 20.4 t ADT: 40
Capps City Rd
FairOver: STATE LINE CREEK TRIB
2.25 M EAST OF LA 1, Caddo, LA
Built 1991 Load: 20.4 t ADT: 39
LA0521
FairOver: DRAIN
2.8 MI NORTH OF LA 2, Claiborne, LA
Built 1975 Load: 20.4 t ADT: 409
US0165
FairOver: CREEK
1.68 MI NORTH OF LA 2, Morehouse, LA
Built 1935 Load: 20.4 t ADT: 1,405
UPLAND RD
FairOver: DRAIN TO PATTEN SLOUGH
2.4 MI. E. INT. 034, Morehouse, LA
Built 1975 Load: 20.4 t ADT: 130
UPLAND RD
FairOver: DRAIN TO PATTEN SLOUGH
1.6 MI. E. INT. 034, Morehouse, LA
Built 1975 Load: 20.4 t ADT: 150
UPLAND RD
FairOver: DRAIN TO PATTEN SLOUGH
1.5 MI. E. INT. 034, Morehouse, LA
Built 1975 Load: 20.4 t ADT: 150
LA0838
FairOver: CREEK
4.2 MI EAST OF LA 546, Ouachita, LA
Built 1955 Load: 20.4 t ADT: 8,105
CYPRESS SCHOOL RD
FairOver: CYPRESS CANAL
2 MI W LUNA, Ouachita, LA
Built 1979 Load: 20.4 t ADT: 235
LA0550
FairOver: CYPRESS CREEK
.14 MI NORTH OF LA 15, Union, LA
Built 1957 Load: 20.4 t ADT: 464
US0090
FairOver: HAMPTONS COULEE
1.0 MI E OF LA 3063, Calcasieu, LA
Built 1954 Load: 20.4 t ADT: 2,509
Showing 1,101-1,150 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.