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
LA0059
PoorOver: LONG BRANCH BAYOU
0.5 M N OF LA 36, St. Tammany, LA
Built 1954 Load: 15.9 t ADT: 4,612
Keller Rd
PoorOver: CREEK
0.3MI.N.OF 9TH STREE, St. Tammany, LA
Built 1970 Load: 15.9 t
Byers Rd
PoorOver: BEDICO CREEK
4.0M NE JCT 445 & LA 22, Tangipahoa, LA
Built 1993 Load: 15.9 t ADT: 128
Illinois Jones Rd
PoorOver: STILL BRANCH
1.5 M N JCT LA3080 &US190, Tangipahoa, LA
Built 1975 Load: 15.9 t ADT: 200
Fannie Powell Rd
PoorOver: CREEK
1.3 MI S OF JCT 440 &1057, Tangipahoa, LA
Built 1970 Load: 15.9 t ADT: 8
Kentwood Firestat
PoorOver: CANAL
LA38S.5TH.01 MI FIRESTATI, Tangipahoa, LA
Built 1995 Load: 15.9 t ADT: 70
N. River Rd
PoorOver: IRVING BRANCH
1.40 M N of LA 38, Tangipahoa, LA
Built 1975 Load: 15.9 t ADT: 141
LA0020
PoorOver: DRAINAGE CANAL
5.0 MI NORTH OF LA 308, Lafourche, LA
Built 1968 Load: 16.2 t ADT: 20,091
LA0308
PoorOver: DRAINAGE CANAL
.5 MI SOUTH OF LA 655, Lafourche, LA
Built 1965 Load: 16.2 t ADT: 11,623
LA0178
PoorOver: BAYOU BOURBEAUX
0.40 MI EAST OF LA 182, St. Landry, LA
Built 1976 Load: 16.2 t ADT: 1,619
James St.
PoorOver: SALINE BAYOU TRIBUTARY
0.4 M NORTH OF LA 147, Bienville, LA
Built 1991 Load: 16.2 t ADT: 100
Village Rd
PoorOver: TRIB. TO MACKS BAYOU
0.2 MI N OF HWY 72, Bossier, LA
Built 1977 Load: 16.2 t ADT: 100
LA3008
PoorOver: BLACK BAYOU RELIEF
1.2 MI SOUTH OF LA 160, Webster, LA
Built 1974 Load: 16.2 t ADT: 145
Strothers Crossing
PoorOver: CALCASIEU RIVER
1.11 MILES EAST OF LA 112, Rapides, LA
Built 1981 Load: 16.2 t ADT: 90
LA0934
PoorOver: BLACK BAYOU
0.6 Mi. E of LA 44, Ascension, LA
Built 1971 Load: 16.2 t ADT: 5,367
LA0076
PoorOver: STREAM NO NAME
0.9 MI W of LA 1, West Baton Rouge, LA
Built 1930 Load: 16.2 t ADT: 6,347
LA1037
PoorOver: LIZARD CREEK
0.4 M S OF LA 42, Livingston, LA
Built 1964 Load: 16.2 t ADT: 1,668
LA0037
PoorOver: GLASS BRANCH
1.5 miles south of LA 10, St. Helena, LA
Built 1960 Load: 16.2 t ADT: 1,781
US0051
PoorOver: YELLOW WATER RIVER
0.3 MI N OF LA 3234, Tangipahoa, LA
Built 1953 Load: 16.2 t ADT: 16,234
6TH ST
PoorOver: KEYHOLE CANAL
260 East of Avenue H, Jefferson, LA
Built 1960 Load: 16.3 t ADT: 200
Homestead Ave
PoorOver: CANAL NO.2
0.4MI.N.OF.VETERANS, Jefferson, LA
Built 1970 Load: 16.3 t
PATRICIA ST
PoorOver: CHALMETTE VISTA CANAL
O.1MI.W.OF VILLAGE S, St. Bernard, LA
Built 1960 Load: 16.3 t ADT: 4,562
US0080
PoorOver: KCS RR
5.9 MI EAST PF I-220, Caddo, LA
Built 1927 Load: 16.3 t ADT: 11,856
Doc Steed Rd
PoorOver: SAUSMAN CREEK
3.5 MI S OF HWY 7, Webster, LA
Built 1979 Load: 16.3 t ADT: 159
LA0148
PoorOver: CREEK
6.19 MI WEST OF LA 146, Jackson, LA
Built 1955 Load: 16.3 t ADT: 532
WEST ST
PoorOver: BUXTON CREEK
0.1 MI N of PATRICIA H RD, Calcasieu, LA
Built 1955 Load: 16.3 t ADT: 50
PECAN ORCHARD ROAD
PoorOver: EAST BAYOU LACASSINE
0.3 MI E of LA 99, Jefferson Davis, LA
Built 1965 Load: 16.3 t ADT: 50
LA0485
PoorOver: LITTLE RIVER RELIEF
3.85 MI. NORTH OF LA 6, Natchitoches, LA
Built 1956 Load: 16.3 t ADT: 508
LA0463
PoorOver: LITTLE BRUSHY CREEK
3.7 MI NORTH OF LA 10, Vernon, LA
Built 1944 Load: 16.3 t ADT: 482
LA0463
PoorOver: BRUSHY CREEK
6.3 MI NORTH OF LA 10, Vernon, LA
Built 1944 Load: 16.3 t ADT: 482
LA0463
PoorOver: DRAIN
12.7 MI NORTH OF LA 10, Vernon, LA
Built 1944 Load: 16.3 t ADT: 482
Spec Garig Rd
PoorOver: LITTLE COMITE CREEK
0.9 M E of LA 19, East Feliciana, LA
Built 1965 Load: 16.3 t ADT: 40
Canfield Rd
PoorOver: WESTFORK BAYOU-CANFIELD
.7 MI NE LA 965-US 61 JCT, West Feliciana, LA
Built 1993 Load: 16.3 t ADT: 180
LA0037
PoorOver: CREEK
2.6 M SW OF LA 10, St. Helena, LA
Built 1958 Load: 16.3 t ADT: 1,730
Sibley Rd
PoorOver: CREEK
4 MI SE OF JCT 190 &, Tangipahoa, LA
Built 1974 Load: 16.3 t ADT: 611
E WOODLAWN RANCH R
PoorOver: GRAND CAILLOU BAYOU
0.2 MI E OF LA 57, Terrebonne, LA
Built 1980 Load: 16.5 t ADT: 4,278
Savanne Rd
PoorOver: HANSON CANAL
00.82 N. of LA 182, Terrebonne, LA
Built 1967 Load: 16.5 t ADT: 2,200
LA0752
PoorOver: DRAINAGE CANAL
0.64 MI WEST OF LA 751, St. Landry, LA
Built 1968 Load: 16.5 t ADT: 475
LA0513
PoorOver: BRUSHY BAYOU
1.81 MI NORTH OF LA 483, De Soto, LA
Built 1969 Load: 16.5 t ADT: 243
CHANDLER RD
PoorOver: I0020
3.55 MI EAST OF LA 33, Lincoln, LA
Built 1960 Load: 16.5 t ADT: 3,600
IOWA AVENUE
PoorOver: DRAINAGE DITCH
0.4 MI N OF 3rd ST, Jefferson Davis, LA
Built 1968 Load: 16.5 t ADT: 200
DUGAS RD.
PoorOver: DITCH
0.5 MI. W. of LA 26, Jefferson Davis, LA
Built 1976 Load: 16.5 t ADT: 100
SOUTH ADAMS STREET
PoorOver: EAST LACASSINE BAYOU
0.1 MI S of US 90, Jefferson Davis, LA
Built 1970 Load: 16.5 t ADT: 300
ESTES RD.
PoorOver: DRAIN
1.7 MI W of LA 102, Jefferson Davis, LA
Built 1970 Load: 16.5 t ADT: 130
LA0001-X
PoorOver: CANE RIVER
.01 MI. S OF INT LA1224, Natchitoches, LA
Built 1936 Load: 16.5 t ADT: 6,362
Potato Farm Rd
PoorOver: CAMPGROUND CREEK
0.49 MI. N. OF SUNSET RD., Rapides, LA
Built 1978 Load: 16.5 t ADT: 75
Potato Farm Rd
PoorOver: LEMEUSE CREEK
2.5 MI. N. OF SUNSET RD., Rapides, LA
Built 1978 Load: 16.5 t ADT: 70
LA0887
PoorOver: BLACK RIVER BAYOU
1.0 MI SOUTH OF LA 887, Tensas, LA
Built 1970 Load: 16.5 t ADT: 58
Muddy Creek Rd
PoorOver: MUDDY CREEK
.8 MI.N.OF LA44 LA4, Ascension, LA
Built 1978 Load: 16.5 t ADT: 150
Buchanan St
PoorOver: CORPORATION CANAL
.01 Mi W. of Highland Rd, East Baton Rouge, LA
Built 1960 Load: 16.5 t ADT: 2,500
Showing 11,901-11,950 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.