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
Line Rd
PoorOver: BLACK CREEK
1.6 Mi. S. of LA 10, East Feliciana, LA
Built 1982 Load: 17.2 t ADT: 126
LA0016
PoorOver: CANAL
0.5 M S OF I-12, Livingston, LA
Built 1955 Load: 17.2 t ADT: 10,776
Holiday Dr
PoorOver: ALGIERS CANAL
0.01MI. E OF DEGAULLE AV., Orleans, LA
Built 1958 Load: 17.5 t
FALGOUT CANAL RD
PoorOver: GRAND CAILLOU BAYOU
0.04 MI W OF LA 57, Terrebonne, LA
Built 1976 Load: 17.5 t ADT: 363
Canberra Rd.
PoorOver: COULEE
0.39 Mi Eof US 167, Lafayette, LA
Built 1983 Load: 17.5 t ADT: 1,120
Veazie Rd
PoorOver: COMPANY CANAL
1.7 Mi N. of LA 10, St. Landry, LA
Built 1980 Load: 17.5 t ADT: 250
LA0352
PoorOver: BAYOU AMY
2.0 MI EAST OF LA 349, St. Martin, LA
Built 1968 Load: 17.5 t ADT: 2,711
LA0975
PoorOver: CREEK
4.9 MI N of I-10, St. Martin, LA
Built 1968 Load: 17.5 t ADT: 231
LA0501
PoorOver: CREEK
3.61 MI SOUTH OF LA 4, Bienville, LA
Built 1960 Load: 17.5 t ADT: 318
LA0169
PoorOver: TWELVE MILE BAYOU
1.6 MI EAST OF LA 1, Caddo, LA
Built 1955 Load: 17.5 t ADT: 311
LA0170
PoorOver: BLACK BAYOU
7.99 MI EAST OF LA 1, Caddo, LA
Built 1977 Load: 17.5 t ADT: 1,209
LA0765
PoorOver: GARRISON CREEK
1.94 MI WEST OF LA 764, De Soto, LA
Built 1974 Load: 17.5 t ADT: 1,150
US0165
PoorOver: MP RAILROAD
2.5 MI NORTH OF SOUTH INT, Morehouse, LA
Built 1939 Load: 17.5 t ADT: 1,405
VANCIL RD
PoorOver: I-20
1.0 MI EAST OF LA 546, Ouachita, LA
Built 1963 Load: 17.5 t ADT: 5,890
DOWNING PINES RD
PoorOver: I0020 & CONSTITUTION DR
4.2 MI EAST OF LA 546, Ouachita, LA
Built 1963 Load: 17.5 t ADT: 6,220
FDR 145
PoorOver: DYSON CREEK
NO DATA ENTERED, Grant, LA
Built 1972 Load: 17.5 t ADT: 30
Will White Rd
PoorOver: SPANISH BRANCH
1.19 M. S. PINE COUPEE RD, Rapides, LA
Built 1970 Load: 17.5 t ADT: 140
MCRAE ST
PoorOver: CASTOR BAYOU TRIB.
0.16 MI. S. OF BOONE ST., Vernon, LA
Built 1974 Load: 17.5 t ADT: 80
LA0944
PoorOver: BAYOU MCCALL
0.6 M SW of LA 1&LA 943, Ascension, LA
Built 1972 Load: 17.5 t ADT: 98
Summerfield Rd
PoorOver: LAKE VILLARS
.9 MI.S.OF PORT VINC, Ascension, LA
Built 1975 Load: 17.5 t ADT: 250
Summerfield Rd
PoorOver: LAKE VILLAKS
.9 MI.S.OF PORT VINC, Ascension, LA
Built 1975 Load: 17.5 t ADT: 250
S Campus Dr
PoorOver: CORPORATION CANAL
L.S.U. CAMPUS (STATE), East Baton Rouge, LA
Built 1955 Load: 17.5 t ADT: 16,457
Centurion Ave
PoorOver: DRAIN BAYOU
.50 MI N. ONEAL LANE, East Baton Rouge, LA
Built 1977 Load: 17.5 t ADT: 379
Carey Rd
PoorOver: BLACKWATER BAYOU
0.4 Mi W of LA 410, East Baton Rouge, LA
Built 1960 Load: 17.5 t ADT: 1,137
Pettit Rd
PoorOver: WHITE BAYOU
0.3 MI E of LA 67, East Baton Rouge, LA
Built 1965 Load: 17.5 t ADT: 2,544
Chaney Rd
PoorOver: WIND BAYOU
1.2 MI SOUTHWEST OF, East Baton Rouge, LA
Built 1972 Load: 17.5 t ADT: 668
LA0001
PoorOver: BAYOU MOREAU
2.2 M NW of LA 970, Pointe Coupee, LA
Built 1957 Load: 17.5 t ADT: 3,289
CHRIS KENNEDY RD
PoorOver: GUM CREEK
1.32 MI. SOUTH OF LA 41, St. Tammany, LA
Built 1984 Load: 17.5 t ADT: 848
Brown Rd
PoorOver: CREEK
4.5 MI NE OF SR 22 E, Tangipahoa, LA
Built 1976 Load: 17.5 t ADT: 1,473
N. Jackson Rd
PoorOver: EVANS BR.
1.8 MI SW OF JCT 106, Tangipahoa, LA
Built 1975 Load: 17.5 t ADT: 57
LA0010
PoorOver: Nezpique Bayou E. Fork
9.0 MI SOUTH OF LA 106, Evangeline, LA
Built 1950 Load: 17.8 t ADT: 1,599
Old Spanish Trail
PoorOver: ILE DES CANNES COULEE
1.5 Mi. W. of LA 93, Lafayette, LA
Built 1978 Load: 17.8 t ADT: 360
LA0082
PoorOver: TURF BAYOU
12.49 Mi W of La 3147, Vermilion, LA
Built 1958 Load: 17.8 t ADT: 2,899
LA0009
PoorOver: SPRAWLS MILL CREEK
1.0 MI N. OF LA 155, Bienville, LA
Built 1970 Load: 17.8 t ADT: 1,172
LA0507
PoorOver: CREEK
0.1M SW OF LA 797, Bienville, LA
Built 1993 Load: 17.8 t ADT: 845
LA0534
PoorOver: DRAIN
1.4 MI NORTH OF LA 534-S, Claiborne, LA
Built 1973 Load: 17.8 t ADT: 118
LA0563
PoorOver: LA 563 OVER I-20
LA 563 OVER I-20, Lincoln, LA
Built 1963 Load: 17.8 t ADT: 1,631
LA3033
PoorOver: CHENIERE SPILLWAY
3.84 MI NORTH OF LA 34, Ouachita, LA
Built 1947 Load: 17.8 t ADT: 5,669
LA0002
PoorOver: CREEK
6.2 MI EAST OF LA 33, Union, LA
Built 1931 Load: 17.8 t ADT: 6,236
LA0002
PoorOver: COLEWA CREEK
4.0 MI EAST OF LA 585, West Carroll, LA
Built 1953 Load: 17.8 t ADT: 2,725
LA0026
PoorOver: CREEK
4.2 MI E OF LA 377, Allen, LA
Built 1968 Load: 17.8 t ADT: 2,151
TOPSY BEL RD
PoorOver: BARNES CREEK
3.7 MI. S. OF US 190, Allen, LA
Built 1972 Load: 17.8 t ADT: 664
NEW COMER RD.
PoorOver: BAYOU
2.3 MI E of LA 383, Jefferson Davis, LA
Built 1979 Load: 17.8 t ADT: 40
FDR 102
PoorOver: INDIAN CREEK
NATIONAL FOREST, Grant, LA
Built 1965 Load: 17.8 t ADT: 12
FDR 102
PoorOver: SHADY CREEK
NO DATA ENTERED, Grant, LA
Built 1965 Load: 17.8 t ADT: 12
FDR 240
PoorOver: CASTOR
NO DATA ENTERED, Rapides, LA
Built 1972 Load: 17.8 t ADT: 30
FDR 354
PoorOver: HYATT BRANCH
NO DATA ENTERED, Natchitoches, LA
Built 1970 Load: 17.8 t ADT: 30
FDR 542
PoorOver: COULEY CREEK
LOGMI 1.30 FR 594 TO, Winn, LA
Built 1965 Load: 17.8 t ADT: 10
K C Rd
PoorOver: BAYOU NARCISSE
2.7 MI NE DUTCHTOWN, Ascension, LA
Built 1970 Load: 17.8 t ADT: 250
River Rd
PoorOver: BOGUE CHITTO CREEK
1.35 M S of LA 438, Washington, LA
Built 1983 Load: 17.8 t ADT: 582
Showing 12,001-12,050 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.