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
LA0160
GoodOver: CANEY CREEK
3.85 MI WEST OF JCT US 37, Bossier, LA
Built 2012 Load: 37.9 t ADT: 421
Latex State Line
GoodOver: WATSON BAYOU
2.4 MI N OF CADDO RD NO., Caddo, LA
Built 2010 Load: 37.9 t ADT: 60
Kingston Rd
GoodOver: BRUSH BAYOU
2.0 MI. SO. OF LA 526, Caddo, LA
Built 2006 Load: 37.9 t ADT: 100
LA0160
GoodOver: BODCAU BAYOU
2.21 MI. WEST OF US 371, Webster, LA
Built 2012 Load: 37.9 t ADT: 421
SUSEK DR
GoodOver: BAYOU MARIA
0.38 MI. EAST OF LA 3144, Rapides, LA
Built 2011 Load: 37.9 t ADT: 4,200
Coulee Crossing Rd
GoodOver: BAYOU CLEAR
0.55 MILE NW OF LA 3265, Rapides, LA
Built 1988 Load: 37.9 t ADT: 25
LA0500
GoodOver: LITTLE RIVER
LOCATED @ LASALL @ GRANT, LaSalle, LA
Built 2011 Load: 37.9 t ADT: 633
LA0500
GoodOver: CREEK
8.3 MI WEST OF US 84, LaSalle, LA
Built 1956 Load: 37.9 t ADT: 633
LA0010
GoodOver: NO NAME STREAM
0.861 MILES WEST OF US 61, West Feliciana, LA
Built 2010 Load: 37.9 t ADT: 5,763
LA0043
GoodOver: CREEK
0.85 MI N OF US 190, Livingston, LA
Built 2021 Load: 37.9 t ADT: 5,232
St Helena Chrch Rd
GoodOver: CREEK
2 MILES EAST OF LA. 1044, St. Helena, LA
Built 2013 Load: 37.9 t ADT: 50
Shiloh Baptist Rd
GoodOver: EAST HOG BRANCH
3.6 MILES WEST OF LA 43, St. Helena, LA
Built 2010 Load: 37.9 t ADT: 50
Byers Ln
GoodOver: BEDICO CREEK
0.8 MI N/E OF LA 22, Tangipahoa, LA
Built 1999 Load: 37.9 t ADT: 388
Moore Rd
GoodOver: MEAZELS CREEK
0.77M WEST OF LA 439, Washington, LA
Built 1993 Load: 37.9 t ADT: 178
US0090
GoodOver: LA1 B.LAFOURCHE LA 308
4.5 MI EAST OF LA 182, Lafourche, LA
Built 1976 Load: 38.1 t ADT: 14,300
US0090
GoodOver: LA308 B.LAFOURCHE LA1
10.5 MI WEST OF LA 632, Lafourche, LA
Built 1976 Load: 38.1 t ADT: 14,300
US0090
GoodOver: ON RAMP FROM LA1
.08 MI EAST OF LA 1, Lafourche, LA
Built 1976 Load: 38.1 t ADT: 12,192
US0090
GoodOver: OFF RAMP TO LA1
.08 MI EAST OF LA 1, Lafourche, LA
Built 1976 Load: 38.1 t ADT: 12,192
US0090
GoodOver: ON RAMP
1.77 MI SOUTH OF MISS. RI, Orleans, LA
Built 1989 Load: 38.1 t ADT: 46,928
US0090-B
GoodOver: LA 428/RAMPS
1.79 MI SOUTH OF MISS. RI, Orleans, LA
Built 1989 Load: 38.1 t ADT: 67,143
I0010
GoodOver: OFF RAMP OVER I10 & LA47
.1 MI EAST OF I-510, Orleans, LA
Built 1972 Load: 38.1 t ADT: 7,620
I0010
GoodOver: ON RAMP OVER I10 & LA47
.1 MI EAST OF I-510, Orleans, LA
Built 1972 Load: 38.1 t ADT: 2,437
US0090
GoodOver: TIGER BAYOU
3.95 MI EAST OF LA 662, Terrebonne, LA
Built 1998 Load: 38.1 t ADT: 3,007
LA1107
GoodOver: Blaise Lejeune Gully
0.50 Mi E of LA 367, Acadia, LA
Built 1982 Load: 38.1 t ADT: 1,131
US0071
GoodOver: TECHE VERMILION CANAL
1.9 MI NORTH OF US 190, St. Landry, LA
Built 1981 Load: 38.1 t ADT: 1,933
LA0170
GoodOver: CREEK
2.1 MI EAST OF I-49, Caddo, LA
Built 1979 Load: 38.1 t ADT: 1,209
LA0169
GoodOver: CREEK
6.87 MI S OF US 79-80, Caddo, LA
Built 1999 Load: 38.1 t ADT: 1,540
I0020
GoodOver: DORCHEAT BAYOU REL
0.44M EAST OF LA 7, Webster, LA
Built 1960 Load: 38.1 t ADT: 38,625
LA0139
GoodOver: BAYOU BOEUF
.1 MI NORTH OF LA 134, Morehouse, LA
Built 2002 Load: 38.1 t ADT: 5,412
BAREFIELD RD
GoodOver: DRY FORK CUT-OFF
1.1 MI N of LA 584, Richland, LA
Built 2005 Load: 38.1 t ADT: 400
LA0549
GoodOver: BAYOU DELOUTRE
4.05 MI E of LA 15, Union, LA
Built 1996 Load: 38.1 t ADT: 1,907
LA0377
GoodOver: CREEK
0.5 M N of LA 112, Allen, LA
Built 1982 Load: 38.1 t ADT: 238
BUD BENNETT RD
GoodOver: BUXTON CREEK
3.6 MI SOUTH OF LA 12, Calcasieu, LA
Built 2011 Load: 38.1 t ADT: 70
I0049
GoodOver: EMMANUEL ROAD
1.62 MI. SOUTH OF LA 119, Natchitoches, LA
Built 1985 Load: 38.1 t ADT: 18,305
ATES RD
GoodOver: US 167
2.5 MI. NORTH OF US 71, Rapides, LA
Built 1980 Load: 38.1 t ADT: 1,570
LA0028
GoodOver: DIVERSION CANAL
2.18 MI. EAST OF LA 3054, Rapides, LA
Built 1971 Load: 38.1 t ADT: 17,593
LA0008
GoodOver: WYATT-CREEK
5.4 MI EAST OF LA 464, Vernon, LA
Built 1978 Load: 38.1 t ADT: 4,071
LA0008
GoodOver: PRAIRIE-CREEK
5.9 MI EAST OF LA 464, Vernon, LA
Built 1978 Load: 38.1 t ADT: 4,071
LA0772
GoodOver: DRAIN
2.0 MI EAST OF US 84, LaSalle, LA
Built 1985 Load: 38.1 t ADT: 116
I0010
GoodOver: CORPORATION CANAL
0.7 M SW of I-110&LA 73, East Baton Rouge, LA
Built 1967 Load: 38.1 t ADT: 32,092
I0010
GoodOver: BLUE BONNETT RD
I0010, East Baton Rouge, LA
Built 1974 Load: 38.1 t ADT: 137,847
I0010
GoodOver: LA1248 (BLUEBONNET)
I0010, East Baton Rouge, LA
Built 1974 Load: 38.1 t ADT: 32,092
I0010
GoodOver: I10 EAST OVER SEIGEN LN
I0010, East Baton Rouge, LA
Built 1974 Load: 38.1 t ADT: 137,847
I0010
GoodOver: I10 OVER SEIGEN LN
I0010, East Baton Rouge, LA
Built 1974 Load: 38.1 t ADT: 32,092
Wilson St
GoodOver: CYPRESS BAYOU
BAKER WILSON STREET, East Baton Rouge, LA
Built 2001 Load: 38.1 t ADT: 2,047
Bains Rd
GoodOver: UNNAMED CREEK
0.8 MI E US 61 LA 66 JCT, West Feliciana, LA
Built 1997 Load: 38.1 t ADT: 80
LA0016
GoodOver: COLYELL BAY
2.0 Mi. E. of LA 42, Livingston, LA
Built 1979 Load: 38.1 t ADT: 6,743
LA0063
GoodOver: LA 63 OVER I-12
LA0063, Livingston, LA
Built 1969 Load: 38.1 t ADT: 10,015
W. 28th ave.
GoodOver: MILE BRANCH
1.0 MILES NORTH OF NORTH, St. Tammany, LA
Built 2007 Load: 38.1 t ADT: 350
US0190
GoodOver: PONCHITOLAWA CR
US 190, St. Tammany, LA
Built 1976 Load: 38.1 t ADT: 4,708
Showing 9,301-9,350 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.