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
LA0458
GoodOver: SIX MILE CREEK
4.06 MI. EAST OF LA 399, Vernon, LA
Built 1994 Load: 36.3 t ADT: 250
LA0008
GoodOver: BAYOU CASTOR
2.4 MILES EAST OF US 171, Vernon, LA
Built 2006 Load: 36.3 t ADT: 7,277
LA0008
GoodOver: BAYOU CASTOR
2.4 MILE EAST OF US 171, Vernon, LA
Built 2006 Load: 36.3 t ADT: 4,268
LA0008
GoodOver: LITTLE PRAIRIE CREEK
1 MILE EAST OF US 171, Vernon, LA
Built 2006 Load: 36.3 t ADT: 7,277
LA0008
GoodOver: LITTLE PRAIRIE CREEK
1 MILE EAST OF US 171, Vernon, LA
Built 2006 Load: 36.3 t ADT: 4,268
US0065
GoodOver: CARROLL BAYOU
3.44 MI NORTH OF US 84, Concordia, LA
Built 1981 Load: 36.3 t ADT: 5,796
Bellevue St.
GoodOver: Hemphill Creek
0.4 MI SW OF E BRADFORD S, LaSalle, LA
Built 1997 Load: 36.3 t ADT: 250
LA0070
GoodOver: LIT BAU PIERRE PA
LA0070, Assumption, LA
Built 1960 Load: 36.3 t ADT: 6,842
PECOS AVE
GoodOver: SHOE CREEK
0.3 MI W of Prairie Dr, East Baton Rouge, LA
Built 2019 Load: 36.3 t ADT: 1,603
Cuyhanga Pkwy
GoodOver: JONES CREEK
0.3 MI E OF MONTERREY BLV, East Baton Rouge, LA
Built 2017 Load: 36.3 t ADT: 25
LA0067
GoodOver: WHITE BAYOU
3.75M NORTH OF LA 3006, East Baton Rouge, LA
Built 1992 Load: 36.3 t ADT: 15,087
I0110
GoodOver: EVANGELINE ST. OFF RAMP
I0110, East Baton Rouge, LA
Built 1970 Load: 36.3 t ADT: 4,185
I0012
GoodOver: CEDARCREST DRIVE
I0012, East Baton Rouge, LA
Built 1986 Load: 36.3 t ADT: 28,013
I0012
GoodOver: CEDARCREST DRIVE
I0012, East Baton Rouge, LA
Built 1986 Load: 36.3 t ADT: 32,092
LA0447
GoodOver: LA 447 OVER I-12
LA0447, Livingston, LA
Built 1970 Load: 36.3 t ADT: 34,245
Loyd Collins Rd
GoodOver: CREEK
0.8 MILES NORTH OF LA 38, St. Helena, LA
Built 2007 Load: 36.3 t ADT: 250
I0010
GoodOver: US 51 & SWAMPS
I0010, St. John the Baptist, LA
Built 1972 Load: 36.3 t ADT: 27,372
LA0021
GoodOver: BOGUE CHITTO RV. RELIEF
0.9 M N OF LA 41, St. Tammany, LA
Built 1975 Load: 36.3 t ADT: 8,257
LA0040
GoodOver: DRAIN
0.9 M E OF LA 25, St. Tammany, LA
Built 1978 Load: 36.3 t ADT: 3,689
I0055
GoodOver: PONCHATOULA CR.
I0055, Tangipahoa, LA
Built 1960 Load: 36.3 t ADT: 39,850
I0055
GoodOver: PONCHATOULA CR.
I0055, Tangipahoa, LA
Built 1960 Load: 36.3 t ADT: 21,736
S RANGE Rd
GoodOver: I-12
I0010, Tangipahoa, LA
Built 1975 Load: 36.3 t ADT: 5,920
Nobles Cemt. Rd
GoodOver: CREEK
1 MILE WEST OF LA 424, Washington, LA
Built 2013 Load: 36.3 t ADT: 993
PRK ROAD
GoodOver: CREEK
4.20 MILES EAST OF LA 25, Washington, LA
Built 2010 Load: 36.3 t
LA0010
GoodOver: BOGUE CHITTO RIVER
0.7 MI E LA 10 & LA 440, Washington, LA
Built 1997 Load: 36.3 t ADT: 12,018
LA0016
GoodOver: WELLS CREEK
2.7M NW ST TAMMANY LINE, Washington, LA
Built 1993 Load: 36.3 t ADT: 1,137
LA0016
GoodOver: MILLER CREEK
4.1M NW ST TAMMANY LINE, Washington, LA
Built 1993 Load: 36.3 t ADT: 1,137
LA0016
GoodOver: JOHNSON BRANCH
6.3M NW ST TAMMANY PH LN, Washington, LA
Built 1993 Load: 36.3 t ADT: 1,137
LA0016
GoodOver: CREEK
6.8M NW ST TAMMANY LINE, Washington, LA
Built 1993 Load: 36.3 t ADT: 1,137
Lydia St
GoodOver: HOLLYWOOD CANAL
0.48 M FROM INT 250, Lafourche, LA
Built 1991 Load: 36.6 t ADT: 131
T-BOIS BRIDGE RD
GoodOver: BAYOU LAFOURCHE
0.01 N. of LA 1, Lafourche, LA
Built 2007 Load: 36.6 t ADT: 1,928
Bayou Des Cannes R
GoodOver: DES CANNES BAYOU
0.9 MI N of LA 1163, Evangeline, LA
Built 1996 Load: 36.6 t ADT: 85
Choboy Lake Rd.
GoodOver: GRAND LOUIS BAYOU
1.03 Mi SE of Beiber Rd, Evangeline, LA
Built 1985 Load: 36.6 t ADT: 30
Seymour Migues Rd
GoodOver: Deblanc Coulee
0.7 Mi. North of LA 676, Iberia, LA
Built 1985 Load: 36.6 t ADT: 356
Choupique Rd
GoodOver: Canal
1.5 Mi. S. of La 3242, Iberia, LA
Built 1985 Load: 36.6 t ADT: 69
LA0339
GoodOver: Creek
2.8 Mi N. of La 338, Lafayette, LA
Built 2022 Load: 36.6 t ADT: 4,990
Beau Bassin Rd.
GoodOver: GASTON COULEE
2.6 MI N of LA 98, Lafayette, LA
Built 2011 Load: 36.6 t ADT: 145
Guillot Rd.
GoodOver: COULEE
1.0 MI S of LA 89, Lafayette, LA
Built 1991 Load: 36.6 t ADT: 440
LA0092
GoodOver: BAYOU QUE DE TORTUE
2.68 MI. E. OF LA 35, Vermilion, LA
Built 2012 Load: 36.6 t ADT: 352
Ivy Rd
GoodOver: SLEDGE CANAL
0.3 Mi N of La 708, Vermilion, LA
Built 1986 Load: 36.6 t ADT: 100
Zwan Rd
GoodOver: COULEE
0.1 Mi N of La 14, Vermilion, LA
Built 1985 Load: 36.6 t ADT: 58
Pine Grove Rd
GoodOver: BRUSH CREEK
0.4 MI N OF LA 4, Bienville, LA
Built 2010 Load: 36.6 t ADT: 250
I0049
GoodOver: LA 173
OVER LA 173, Caddo, LA
Built 2013 Load: 36.6 t ADT: 29,542
I0049
GoodOver: LA 173
I-49 OVER LA173, Caddo, LA
Built 2013 Load: 36.6 t ADT: 6,846
I0049
GoodOver: US 71
I-49 / US 71 INTG., Caddo, LA
Built 2014 Load: 36.6 t ADT: 53,023
Lyons Hill
GoodOver: CANEY CREEK
0.15 MI. S. OF US 79 ON L, Claiborne, LA
Built 2016 Load: 36.6 t ADT: 125
LA0159
GoodOver: BLACK BAYOU
16.95 MI. N. OF US 79 80, Webster, LA
Built 2005 Load: 36.6 t ADT: 562
GREENBRIAR RD
GoodOver: JOES BAYOU
0.4 MI EAST OF HWY 579, East Carroll, LA
Built 1987 Load: 36.6 t ADT: 115
US0167
GoodOver: CYPRESS CREEK RELIEF
18.65 MI N WINN PARISH LN, Jackson, LA
Built 2008 Load: 36.6 t ADT: 8,681
US0425
GoodOver: BAYOU BARTHOLOMEW
2.2 MI. SOUTH OF LA 142, Morehouse, LA
Built 2012 Load: 36.6 t ADT: 5,676
Showing 9,051-9,100 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.