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
LA0139
GoodOver: SANDY LICK BAYOU
2.63 MI N OUACHITA PAR LN, Morehouse, LA
Built 2002 Load: 42.6 t ADT: 5,412
LA0143
GoodOver: HAILE CREEK
0.22 MI N of HAILE LOOP, Union, LA
Built 2001 Load: 42.6 t ADT: 2,254
LA0134
GoodOver: BAYOU
7.15 MI E RICHLAND PAR LN, West Carroll, LA
Built 1991 Load: 42.6 t ADT: 759
STANLEY RD
GoodOver: CREEK
0.1 MI W OF POWELL LANE, Calcasieu, LA
Built 2011 Load: 42.6 t ADT: 6
US0071
GoodOver: BAYOU LAMOURIE
2.96 MI. NORTH OF LA 112, Rapides, LA
Built 1977 Load: 42.6 t ADT: 5,157
US0071
GoodOver: BAYOU LAMOURIE
2.96 MI. NORTH OF LA 112, Rapides, LA
Built 1977 Load: 42.6 t ADT: 4,141
LA0107
GoodOver: SWAFFORD CREEK
2.28 MI. EAST OF LA 454, Rapides, LA
Built 1998 Load: 42.6 t ADT: 3,354
Forestry Rd
GoodOver: FORESTRY ROAD OVER I-49
3.9M N OF LA 112 ON I-49, Rapides, LA
Built 1989 Load: 42.6 t ADT: 1,460
I0049
GoodOver: BAYOU BOEUF
1.48 MI. SOUTH OF LA 3265, Rapides, LA
Built 1991 Load: 42.6 t ADT: 20,572
Cotton Gin Rd
GoodOver: I-49
0.83 MI. NORTH OF US 71, Rapides, LA
Built 1989 Load: 42.6 t ADT: 1,460
I0049
GoodOver: EMBANKMENT
I-49/US 167 INTG., Rapides, LA
Built 1993 Load: 42.6 t ADT: 31,187
I0049
GoodOver: GROUND
1.03 MI. SOUTH OF US 71, Rapides, LA
Built 1995 Load: 42.6 t ADT: 15,642
I0049
GoodOver: UP RR
1.05 MI. NORTH OF LA 498, Rapides, LA
Built 1991 Load: 42.6 t ADT: 25,033
I0049
GoodOver: UP RR
1.05 MI. NORTH OF LA 498, Rapides, LA
Built 1991 Load: 42.6 t ADT: 20,561
US0071
GoodOver: LA 1 FR. ROAD UP RR
0.67 MI. NE OF LA 498, Rapides, LA
Built 1996 Load: 42.6 t ADT: 18,100
US0171
GoodOver: LEWIS CREEK
1.67 MI. NORTH OF LA 175, Sabine, LA
Built 1990 Load: 42.6 t ADT: 3,273
LA0467
GoodOver: BAYOU CASTOR S BRANCH
1.24 MI. SOUTH OF US 171, Vernon, LA
Built 1989 Load: 42.6 t ADT: 6,076
LA0010
GoodOver: LITTLE SIX MILE CREEK
5.18 MI. WEST OF LA 463, Vernon, LA
Built 1990 Load: 42.6 t ADT: 1,367
LA0111
GoodOver: SANDY CREEK
.77 MI EAST OF JCT LA 392, Vernon, LA
Built 1999 Load: 42.6 t ADT: 801
US0084
GoodOver: PORT DELUCE CREEK
1.05 MI EAST JCT US 167, Winn, LA
Built 1996 Load: 42.6 t ADT: 4,317
US0084
GoodOver: DUGEMONA RIVER RELIEF
1.28 MI EAST JCT US 167, Winn, LA
Built 1996 Load: 42.6 t ADT: 4,317
US0084
GoodOver: PINEY WOODS CREEK
4.6 MI EAST OF LA 124, Winn, LA
Built 1998 Load: 42.6 t ADT: 891
US0084
GoodOver: LITTLE POLE LOG CREEK
5.94 MI. EASTOF LA 124, Winn, LA
Built 1998 Load: 42.6 t ADT: 891
US0084
GoodOver: POPE CREEK
9.2 MI EAST OF LA 124, Winn, LA
Built 1998 Load: 42.6 t ADT: 891
US0167
GoodOver: PORT DELUCE CREEK
0.25M S OF INT OF 167&501, Winn, LA
Built 1991 Load: 42.6 t ADT: 8,727
LA0008
GoodOver: BIRDS CREEK
3.5 MI EAST OF THE EAST I, Catahoula, LA
Built 1996 Load: 42.6 t ADT: 1,527
LA0008
GoodOver: STOKES CREEK
6.5 MI EAST OF THE EAST I, Catahoula, LA
Built 1996 Load: 42.6 t ADT: 1,527
LA0008
GoodOver: FLATS CREEK
3.8 MI EAST OF US 84, Catahoula, LA
Built 1977 Load: 42.6 t ADT: 1,606
LA0900
GoodOver: CARROLL LAKE
1.5 MI NORTH OF LA 568, Concordia, LA
Built 1985 Load: 42.6 t ADT: 337
LA0565
GoodOver: WHITES BAYOU
4.23 MI EAST OF LA 129, Concordia, LA
Built 1973 Load: 42.6 t ADT: 801
LA0565
GoodOver: BAYOU COCODRIE
6.09 MI EAST OF LA 129, Concordia, LA
Built 1973 Load: 42.6 t ADT: 801
LA0008
GoodOver: MACK BRANCH CREEK
3.6 MI SOUTH OF LA 774, LaSalle, LA
Built 1972 Load: 42.6 t ADT: 1,590
LA3159
GoodOver: JUMPING GULLY CREEK
1.35 MI NORTH OF US 84, LaSalle, LA
Built 1995 Load: 42.6 t ADT: 220
LA3159
GoodOver: JUMPING GULLY CREEK
2.9 MI NORTH OF US 84, LaSalle, LA
Built 1995 Load: 42.6 t ADT: 220
LA0044
GoodOver: BAYOU FRANCOIS
LA0044, Ascension, LA
Built 1976 Load: 42.6 t ADT: 15,883
LA 3064
GoodOver: DAWSON CREEK
0.4 M SOUTH OF LA427, East Baton Rouge, LA
Built 2013 Load: 42.6 t ADT: 33,927
Church St.
GoodOver: CYPRESS BAYOU
1.2 M W of LA 19, East Baton Rouge, LA
Built 1976 Load: 42.6 t ADT: 17,411
LA0447
GoodOver: DUMPLIN CREEK
00.14 MI NORTH OF US 190, Livingston, LA
Built 2000 Load: 42.6 t ADT: 34,245
LA0041
GoodOver: TALISHEEK CREEK
0.4 M NW OF LA 435, St. Tammany, LA
Built 1972 Load: 42.6 t ADT: 3,043
LA1082
GoodOver: LITTLE BOGUE FALAYA RIV
0.2 M N OF LA 21, St. Tammany, LA
Built 1972 Load: 42.6 t ADT: 2,916
LA0022
GoodOver: DRAIN
3.0 M W OF I-55, Tangipahoa, LA
Built 1976 Load: 42.6 t ADT: 18,757
I0055
GoodOver: OFF RAMP US 51 MANCHAC
9.9 M S OF LA 22, Tangipahoa, LA
Built 1979 Load: 42.6 t ADT: 8,115
I0012
GoodOver: PONCHATOULA CREEK
I0010, Tangipahoa, LA
Built 1975 Load: 42.6 t ADT: 21,736
LA1064
GoodOver: LA 1064 OVER I-55
LA1064, Tangipahoa, LA
Built 1970 Load: 42.6 t ADT: 2,854
LA1040
GoodOver: NATALBANY RIVER
TANGI-LIV. PARISH LINE, Tangipahoa, LA
Built 1986 Load: 42.6 t ADT: 7,190
LA0021
GoodOver: PUSHAPATAPA CR
LA0021, Washington, LA
Built 1965 Load: 42.6 t ADT: 5,485
MANHATTAN BLVD
GoodOver: BAYOU FATMA
0.5 M S OF LAPALCO BLVD, Jefferson, LA
Built 1990 Load: 42.8 t ADT: 9,700
Ayreshire Dr.
GoodOver: Rena Coulee
0.03 MI N of Rena Dr, Lafayette, LA
Built 2012 Load: 42.8 t ADT: 4,092
LA0726
GoodOver: COULEE BEAU
0.5 MI EAST OF LA 182, Lafayette, LA
Built 2005 Load: 42.8 t ADT: 13,175
US0080
GoodOver: CROSS BAYOU RELIEF
1.89 MI E OF TEXAS LINE, Caddo, LA
Built 2016 Load: 42.8 t ADT: 3,924
Showing 10,201-10,250 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.