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
I0049
GoodOver: GROUND
BROADWAY INTG., Rapides, LA
Built 1994 Load: 37.2 t ADT: 20,561
I0049
GoodOver: US 167 & 9th St
I-49/US 167 INTG., Rapides, LA
Built 1995 Load: 37.2 t ADT: 35,040
LA3250
GoodOver: I-49 UP RR
0.13 MI. EAST OF US 71, Rapides, LA
Built 1993 Load: 37.2 t ADT: 2,205
LA0008
GoodOver: LITTLE-SANDY-CREEK
.1 MI EAST OF LA 464, Vernon, LA
Built 1977 Load: 37.2 t ADT: 2,687
LA0028
GoodOver: FLOCTAW CREEK BRIDGE
4.6 MI EAST OF LA 121, Vernon, LA
Built 1975 Load: 37.2 t ADT: 6,307
LA0028
GoodOver: GREYS CREEK
6.4 MI EAST OF LA 121, Vernon, LA
Built 1975 Load: 37.2 t ADT: 6,307
LA0004
GoodOver: BAYOU MACON
.01 MI NORTH OF LA 555, Franklin, LA
Built 1993 Load: 37.2 t ADT: 1,128
LA0460
GoodOver: DOYLE BRANCH
6.0 MI EAST OF LA 127, LaSalle, LA
Built 1978 Load: 37.2 t ADT: 776
US0090
GoodOver: WEST BOUND RAMP (OFF)
1.0 M W of US 90&LA 662, Assumption, LA
Built 1998 Load: 37.2 t ADT: 12,192
S Tiger Bend Rd
GoodOver: CLAYCUT BAYOU
4 MI NE LA 42 I-10 INT., East Baton Rouge, LA
Built 1993 Load: 37.2 t ADT: 5,630
LA0021
GoodOver: WRIGHTS CREEK
LA0021, St. Tammany, LA
Built 1975 Load: 37.2 t ADT: 7,481
LA0040
GoodOver: DRAIN
LA 40 LOG MILE 01.05, Tangipahoa, LA
Built 1982 Load: 37.2 t ADT: 4,748
LA0040
GoodOver: DAVIS BRANCH
0.7 M SE OF LA 1054, Tangipahoa, LA
Built 1981 Load: 37.2 t ADT: 4,748
LA0016
GoodOver: TCHEFUNCTE RIVER
LA0016, Washington, LA
Built 1974 Load: 37.2 t ADT: 3,747
LA0438
GoodOver: WEST FORK PUSHAPATAPA CR
LA0438, Washington, LA
Built 1981 Load: 37.2 t ADT: 925
US0090
GoodOver: GROUND
0.5 MI S EAST OF MISSISSI, Jefferson, LA
Built 2013 Load: 37.3 t ADT: 32,801
DAUTERIVE DR
GoodOver: 20 ARPENT CANAL
0.3 MI N OF LA 39, St. Bernard, LA
Built 2014 Load: 37.3 t ADT: 539
ROSETTA DR
GoodOver: 20 ARPENT CANAL
0.3 MI N OF LA 39, St. Bernard, LA
Built 2013 Load: 37.3 t ADT: 535
SOUTHDOWN MANDALAY
GoodOver: COULEE CANAL
5 MILES WEST OF LA 316, Terrebonne, LA
Built 2007 Load: 37.3 t ADT: 1,392
US0090
GoodOver: ARMENCO CANAL
0.7 Mi E of La 675, Iberia, LA
Built 2005 Load: 37.3 t ADT: 1,301
US0090
GoodOver: ARMENCO CANAL
1.37 MI W of LA 14, Iberia, LA
Built 2005 Load: 37.3 t ADT: 10,598
S. Bernard Rd.
GoodOver: Cypress Bayou
0.8 Miles S. of La 3073, Lafayette, LA
Built 2017 Load: 37.3 t ADT: 1,597
Vincent Rd.
GoodOver: Anslem Coulee
0.30 Mi W of LA 339, Lafayette, LA
Built 2012 Load: 37.3 t ADT: 3,155
LA7281
GoodOver: GASTON COULEE
0.06 MI N of I-10, Lafayette, LA
Built 1982 Load: 37.3 t ADT: 10,589
Charlie Field Rd.
GoodOver: Tiger Bayou
0.4 MI S OF LA 14, Vermilion, LA
Built 2011 Load: 37.3 t ADT: 790
I0049
GoodOver: DRAIN
1.11 M. S. OF LA 530, Caddo, LA
Built 2013 Load: 37.3 t ADT: 29,542
I0049
GoodOver: DRAIN
1.09 M. S.OF LA 530, Caddo, LA
Built 2013 Load: 37.3 t ADT: 6,846
OCKLEY DRIVE
GoodOver: OCKLEY DITCH
1.9 MI NORTH OF LA 511, Caddo, LA
Built 1988 Load: 37.3 t ADT: 300
LA0004
GoodOver: CREEK
5.62 MI E BIENVILLE PAR, Jackson, LA
Built 1987 Load: 37.3 t ADT: 3,086
SUNSHINE RD
GoodOver: DRAIN TO BAYOU BOEUF
2.0 MILES WEST OF LA 585, Morehouse, LA
Built 2012 Load: 37.3 t ADT: 75
WHITE AVE
GoodOver: STALKINGHEAD CREEK
0.7 MI S of US 165, Morehouse, LA
Built 2008 Load: 37.3 t ADT: 1,800
HADLEY ST
GoodOver: YOUNGS BAYOU
1.21 MI. EAST OF US 165, Ouachita, LA
Built 2013 Load: 37.3 t ADT: 4,000
LA0012
GoodOver: PATTERSON SLOUGH
3.98 MI. WEST OF LA 109, Calcasieu, LA
Built 2013 Load: 37.3 t ADT: 3,365
LA0012
GoodOver: BICKHAM SLOUGH
3.79 MI. WEST OF LA 109, Calcasieu, LA
Built 2013 Load: 37.3 t ADT: 3,365
BOURQUE ROAD
GoodOver: CANAL
1.2 M W of LA 101, Jefferson Davis, LA
Built 2004 Load: 37.3 t ADT: 100
LA0123
GoodOver: GRAY BRANCH CREEK
6.55 MI. EAST OF US 167, Grant, LA
Built 2011 Load: 37.3 t ADT: 595
LA0123
GoodOver: DRY PRONG CREEK
2.92 MI. EAST OF US 167, Grant, LA
Built 2011 Load: 37.3 t ADT: 595
LA0123
GoodOver: DRY PRONG RELIEF CREEK
2.82 MI. EAST OF US 167, Grant, LA
Built 2011 Load: 37.3 t ADT: 595
LA0156
GoodOver: CREEK
2.87 MI EAST OF LA 9, Natchitoches, LA
Built 2012 Load: 37.3 t ADT: 597
Kisatchie-Mora
GoodOver: LITTLE BAYOU PIERRE
6.4 MILES EAST OF LA 117, Natchitoches, LA
Built 1995 Load: 37.3 t ADT: 282
Freeman Loop Rd
GoodOver: LITTLE RIVER
3.0 M. NORTH OF LA 120, Natchitoches, LA
Built 1996 Load: 37.3 t ADT: 102
Maribel Rd
GoodOver: HURRICANE CREEK
0.5 MI EAST OF US 61, East Baton Rouge, LA
Built 2016 Load: 37.3 t ADT: 259
Greenwell St
GoodOver: ROBERTS CANAL
1.5 MI E OF AIRLINE HWY, East Baton Rouge, LA
Built 2017 Load: 37.3 t ADT: 6,115
BARNETT CUT-OFF RD
GoodOver: BAYOU BATON ROUGE
0.5 MI S OF LA 64, East Baton Rouge, LA
Built 2019 Load: 37.3 t ADT: 310
Sharp Rd
GoodOver: JONES CREEK
0.1 MILE SOUTH OF US 190, East Baton Rouge, LA
Built 2014 Load: 37.3 t ADT: 13,727
Fitzgerald Church
GoodOver: SIMULSA CREEK
1.1 MILES NORTH OF MILLIO, St. Tammany, LA
Built 2012 Load: 37.3 t ADT: 198
W CSWY APPR E.B.
GoodOver: CHINCHUB BAYOU
1.6 MI S LA 22 W CAUSEWAY, St. Tammany, LA
Built 1954 Load: 37.3 t ADT: 8,000
LA 22 W CAUSEWAY
GoodOver: W CSWY OV CHINCHUB BAYOU
1.6 MI S LA 22 W CAUSEWAY, St. Tammany, LA
Built 1954 Load: 37.3 t ADT: 8,000
E. Little Italy Rd
GoodOver: CREEK
0.1 Mi E of S Range Rd, Tangipahoa, LA
Built 2010 Load: 37.3 t ADT: 1,700
J. W. Davis Dr
GoodOver: CREEK
2.2 MILES SOUTHEAST OF US, Tangipahoa, LA
Built 2012 Load: 37.3 t ADT: 3,070
Showing 9,201-9,250 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.