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
LA0016
FairOver: COON BRANCH
0.64M E ST HELENA PH LINE, Tangipahoa, LA
Built 1992 Load: 40.8 t ADT: 4,942
I0012
FairOver: NATALBANY RIVER
I0012, Tangipahoa, LA
Built 1970 Load: 40.8 t ADT: 37,140
I0012
FairOver: TANGIPAHOA RIVER RELIEF
I0012, Tangipahoa, LA
Built 1975 Load: 40.8 t ADT: 53,386
LA0438
FairOver: THOMAS CREEK
LA0438 LOG MILE 03.10, Washington, LA
Built 1981 Load: 40.8 t ADT: 1,353
LA0438
FairOver: MONROE CREEK
LA 438 LOG MILE 04.11, Washington, LA
Built 1981 Load: 40.8 t ADT: 1,518
LA0014
FairOver: BAYOU TIGRE
1. E Of LA 14B, Vermilion, LA
Built 1999 Load: 41.1 t ADT: 12,903
GOLSON RD
FairOver: CHENIERE CREEK
0.057 MI SW of LA 144, Ouachita, LA
Built 1996 Load: 41.1 t ADT: 147
MOSSWOOD DR
FairOver: BAYOU DINDE
0.5 MILES E OF LA 27, Calcasieu, LA
Built 2013 Load: 41.1 t ADT: 1,333
Barron Rd
FairOver: CLEAR CREEK
2.64 M. NE OF US 165, Grant, LA
Built 1997 Load: 41.1 t ADT: 60
Richmond Rd
FairOver: SPRING CREEK
0.5 MI. E. OF MELDER RD., Rapides, LA
Built 1993 Load: 41.1 t ADT: 240
US0171
FairOver: KCS RR
0.45 MI. NORTH OF LA 483, Sabine, LA
Built 2003 Load: 41.1 t ADT: 3,585
Club Deluxe Rd
FairOver: CREEK
1 MI SW BUS 51 EXIT I-12, Tangipahoa, LA
Built 1984 Load: 41.1 t ADT: 18,305
Ridgel Rd
FairOver: PONCHATOULA CREEK
1.2MI SJCT LA442/RIDGE/RD, Tangipahoa, LA
Built 1997 Load: 41.1 t ADT: 234
HARRISON AVE
FairOver: CITY PARK LAGOON
0.4MI.W.OF WISNER BL, Orleans, LA
Built 1939 Load: 41.5 t
Hawk Rd
FairOver: Cole Gully
1 Mi. E Of La 98, Acadia, LA
Built 2006 Load: 41.5 t ADT: 96
TONEY BAYOU RD
FairOver: TONEY BAYOU
1.0 MI SOUTH LA 34, Ouachita, LA
Built 1987 Load: 41.5 t ADT: 130
I0010
FairOver: MAPLE FORK BAYOU
0.4 MI EAST OF LA 108, Calcasieu, LA
Built 2022 Load: 41.5 t ADT: 83,609
CORBINA ROAD
FairOver: DRAIN
0.8 MI N of E MCNEESE ST, Calcasieu, LA
Built 2011 Load: 41.5 t ADT: 1,525
ENTERPRISE BLVD
FairOver: SPRR/CITY STREETS
0.6 MI NORTH OF US 90B, Calcasieu, LA
Built 1975 Load: 41.5 t ADT: 5,396
Main St in Natchez
FairOver: BAYOU NATCHEZ
0.09 MILES WEST OF LA 1, Natchitoches, LA
Built 1984 Load: 41.5 t ADT: 732
LA3139
FairOver: CENTRAL AVE IC KCS SP.RR
1.1 MI EAST OF LA 3154, Jefferson, LA
Built 1986 Load: 41.7 t ADT: 55,872
I0010
FairOver: CITY STREETS
2.2 MI EAST OF US 90, Orleans, LA
Built 1968 Load: 41.7 t ADT: 5,154
LA0023
FairOver: BAYOU BARRIERE
.3 MI SOUTH OF LA 428, Plaquemines, LA
Built 1968 Load: 41.7 t ADT: 25,594
I0010
FairOver: DES CANNES RELIEF
3.8 MI EAST OF LA 97, Acadia, LA
Built 1992 Load: 41.7 t ADT: 24,065
I0010
FairOver: DES CANNES RELIEF
6.30 Mi W of LA 91, Acadia, LA
Built 1961 Load: 41.7 t ADT: 1,471
I0010
FairOver: BAYOU DES CANNES
4.1 MI EAST OF LA 97, Acadia, LA
Built 1961 Load: 41.7 t ADT: 36,670
LA0093
FairOver: LA 93 OVER I-10
0.8 Miles North of US 90, Lafayette, LA
Built 1976 Load: 41.7 t ADT: 10,639
LA0614
FairOver: LA 614 OVER I-20
LA 614 OVER I-20, Bossier, LA
Built 1975 Load: 41.7 t ADT: 3,476
US0080
FairOver: I-220
3.2 MI EAST OF LA 526, Caddo, LA
Built 1985 Load: 41.7 t ADT: 11,856
LA0877
FairOver: BAYOU MACON
.71 MI WEST OF LA 577, East Carroll, LA
Built 1983 Load: 41.7 t ADT: 284
US0167
FairOver: LITTLE DUGDEMONA CREEK
0.6 MI. N. OF LA 542, Jackson, LA
Built 1976 Load: 41.7 t ADT: 13,811
LA0139
FairOver: I.P. DRAINAGE CANAL
5.9 MI NORTH OF LA 554, Morehouse, LA
Built 1973 Load: 41.7 t ADT: 9,490
US0165-B
FairOver: CITY ST & ICRR
.3 MI NORTH OF I-20, Ouachita, LA
Built 1971 Load: 41.7 t ADT: 17,565
US0165
FairOver: LA 549 & ICRR
US 165 OVER I-20, Ouachita, LA
Built 1966 Load: 41.7 t ADT: 17,565
I0210
FairOver: KIRKMAN STREET
2.4 MI EAST OF LA 1138-2, Calcasieu, LA
Built 1975 Load: 41.7 t ADT: 30,723
I0010
FairOver: COONE GULLY
.5 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 41.7 t ADT: 86,969
I0010
FairOver: COONE GULLY
0.5 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 41.7 t ADT: 3,799
LA0108
FairOver: I-10
3.0 MILES EAST OF JCT LA, Calcasieu, LA
Built 1962 Load: 41.7 t ADT: 10,981
LA0027
FairOver: BIG CROSS CREEK
7.1 MI N of LA 82, Cameron, LA
Built 1999 Load: 41.7 t ADT: 1,226
LA0027
FairOver: LITTLE CROSS CREEK
9.6 MI N of LA 82, Cameron, LA
Built 1999 Load: 41.7 t ADT: 1,226
LA0027
FairOver: HOG ISLAND GULLY
12.78 MI. N OF INT LA82, Cameron, LA
Built 2000 Load: 41.7 t ADT: 1,226
LA0027
FairOver: LONG POINT BAYOU
14.24 MI. N OF INT LA82, Cameron, LA
Built 2000 Load: 41.7 t ADT: 1,226
LA0027
FairOver: KAYO BAYOU
14.5 MI N of LA82, Cameron, LA
Built 2000 Load: 41.7 t ADT: 1,226
I0010
FairOver: LA 26
I-10 OVER LA 26, Jefferson Davis, LA
Built 1965 Load: 41.7 t ADT: 61,210
I0010
FairOver: LA 26
2.0 MI W of LA 97, Jefferson Davis, LA
Built 1965 Load: 41.7 t ADT: 7,591
LA0006
FairOver: EDMONSON CREEK
1.3 MI EAST OF LA 476, Sabine, LA
Built 1950 Load: 41.7 t ADT: 5,277
LA0191
FairOver: TOLEDO BEND RESERVOIR
.3 MI SOUTH OF LA 392, Sabine, LA
Built 1963 Load: 41.7 t ADT: 684
US0171
FairOver: BAYOU ZOURIE
1.1 MI NORTH OF LA 10, Vernon, LA
Built 1978 Load: 41.7 t ADT: 6,952
US0165
FairOver: COCKERHAM CREEK
2.4 MI SOUTH OF US 84, LaSalle, LA
Built 1956 Load: 41.7 t ADT: 3,518
LA0044
FairOver: CONWAY BAYOU
LA 44 @ I-10, Ascension, LA
Built 1974 Load: 41.7 t ADT: 13,914
Showing 5,351-5,400 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.