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
LA3139
GoodOver: HWYS STS RR CA.
2.0 MI EAST OF LA 3152, Jefferson, LA
Built 1983 Load: 31.8 t ADT: 34,781
LA3139
GoodOver: RR. CA.
2.1 MI EAST OF LA 3152, Jefferson, LA
Built 1983 Load: 31.8 t ADT: 34,781
LA3139
GoodOver: ST. R/R
2.6 MI EAST OF LA 3152, Jefferson, LA
Built 1982 Load: 31.8 t ADT: 55,872
LA3139
GoodOver: STS. R/R
2.6 MI EAST OF LA 3152, Jefferson, LA
Built 1982 Load: 31.8 t ADT: 37,914
I0010
GoodOver: BONNABEL BLVD.
6.0 MI EAST OF LA 49, Jefferson, LA
Built 1966 Load: 31.8 t ADT: 41,695
LAPALCO BLVD
GoodOver: MAIN CANAL
0.6 MILES FROM SEGNETTE B, Jefferson, LA
Built 1976 Load: 31.8 t ADT: 1,000
US0090
GoodOver: CITY STS. & RAMPS
.64 MI SOUTH OF I-10, Orleans, LA
Built 1994 Load: 31.8 t ADT: 7,620
I0310
GoodOver: I-10/I-310/SWAMP
0.4 M SOUTH OF I-10, St. Charles, LA
Built 1992 Load: 31.8 t ADT: 15,642
I0310
GoodOver: RAMPS E F G & H
5.63 MI S JCT I-10, St. Charles, LA
Built 1980 Load: 31.8 t ADT: 15,642
I0310
GoodOver: I310 SB TO US90
0.40 MI. N. OF US 90, St. Charles, LA
Built 1986 Load: 31.8 t ADT: 40,204
Wagon Rd.
GoodOver: GRAND COULEE
0.5 MI E of Pamela Drive, Acadia, LA
Built 1986 Load: 31.8 t ADT: 8
US0090
GoodOver: SEGURA BRANCH CANAL
3.0 MI SE of LA 88, Iberia, LA
Built 2009 Load: 31.8 t ADT: 1,755
US0090
GoodOver: SEGURA BRANCH CANAL
3.10 Mi SE of LA 88, Iberia, LA
Built 2009 Load: 31.8 t ADT: 1,755
US0090
GoodOver: LA 329 & LDRR
2.38 Mi W of LA 83, Iberia, LA
Built 1969 Load: 31.8 t ADT: 10,090
Louisiana Ave.
GoodOver: COULEE
.3 mi N of I-10, Lafayette, LA
Built 2010 Load: 31.8 t ADT: 1,967
Hickory Rd.
GoodOver: BAYOU BOURBEUX
0.53 Mi N of LA 93, St. Landry, LA
Built 1997 Load: 31.8 t ADT: 400
LA0686
GoodOver: CREEK
2.0 MI NORTH OF LA 347, St. Martin, LA
Built 2014 Load: 31.8 t ADT: 3,212
LA0094
GoodOver: BAYOU TECHE
0.1 MI WEST OF LA 31, St. Martin, LA
Built 1980 Load: 31.8 t ADT: 18,293
US0090/SERVICE RD
GoodOver: COULEE
0.9 MI WEST OF LA 182, St. Mary, LA
Built 1975 Load: 31.8 t ADT: 162
Dudley Rd
GoodOver: PARC PERDU BAYOU
0.9 Mi N of Germain Rd, Vermilion, LA
Built 2011 Load: 31.8 t ADT: 966
PLANTATION DRIVE
GoodOver: DRAIN
1.05 MI NE OF LA 3105, Bossier, LA
Built 2016 Load: 31.8 t ADT: 200
Caplis Sligo Rd
GoodOver: Flat River
0.7 MI NE OF US 71, Bossier, LA
Built 2014 Load: 31.8 t ADT: 1,000
LA3132
GoodOver: LA 3132 WALKER ROAD
2.7 MI. E. OF LA 511, Caddo, LA
Built 1990 Load: 31.8 t ADT: 53,886
LA3132
GoodOver: LA 3132 WALKER ROAD
1.5 MI. W. OF US 171, Caddo, LA
Built 1990 Load: 31.8 t ADT: 23,520
LA0002
GoodOver: BEAVER BRANCH&CYPRESS CR
3.05 MI EAST OF US 79, Claiborne, LA
Built 1981 Load: 31.8 t ADT: 2,020
Old Arcadia Rd
GoodOver: TRIBUTARY TO BEAR CREEK
4.2 MI SOUTH OF LA 518, Claiborne, LA
Built 1996 Load: 31.8 t ADT: 180
Old Arcadia Rd
GoodOver: TRIBUTARY TO BEAR CREEK
4.1 MI SOUTH OF LA 518, Claiborne, LA
Built 1996 Load: 31.8 t ADT: 170
Old Arcadia Rd
GoodOver: BEAR CREEK
3.9 MI SOUTH OF LA 518, Claiborne, LA
Built 1996 Load: 31.8 t ADT: 170
LA0004
GoodOver: CREEK
8.08MILES EAST OF JCT LA, Jackson, LA
Built 2009 Load: 31.8 t ADT: 338
MCCOWN RD
GoodOver: SABINE CANAL
0.2 MI E of S THOMPSON RD, Calcasieu, LA
Built 2011 Load: 31.8 t ADT: 19
US0165
GoodOver: LITTLE CREEK
1.15 MI. NORTH OF LA 123, Grant, LA
Built 2007 Load: 31.8 t ADT: 1,898
US0165
GoodOver: INDIAN CREEK
4.63 MI. NORTH OF LA 123, Grant, LA
Built 2007 Load: 31.8 t ADT: 7,084
US0165
GoodOver: BEAR CREEK
5.66 MI. NORTH OF LA 123, Grant, LA
Built 2007 Load: 31.8 t ADT: 7,084
I0049
GoodOver: DITCH
SOUTH I-49 / US 71 INTG., Rapides, LA
Built 1992 Load: 31.8 t ADT: 15,642
I0049
GoodOver: UP RR
BROADWAY INTG., Rapides, LA
Built 1994 Load: 31.8 t ADT: 15,642
I0049
GoodOver: HILL BAYOU
3.09 MI. NORTH OF LA 3250, Rapides, LA
Built 1995 Load: 31.8 t ADT: 20,561
I0049
GoodOver: INDUSTRIAL PARK RD &UPRR
2.64 M.S. LA 498, Rapides, LA
Built 1992 Load: 31.8 t ADT: 42,770
I0049
GoodOver: INDUSTRIAL PARK RD &UPRR
2.64 M.S. LA 498, Rapides, LA
Built 1992 Load: 31.8 t ADT: 20,561
I0049
GoodOver: ROAD RR LAKE CONVEYOR
3.0 MI. N OF LA1200, Rapides, LA
Built 1982 Load: 31.8 t ADT: 11,969
US0171
GoodOver: BAYOU SAN PATRICIO
2.6 MI NORTH LA 483, Sabine, LA
Built 2006 Load: 31.8 t ADT: 4,790
LA0028
GoodOver: WEST FORK CREEK
3 MI. WEST OF JCT. LA 121, Vernon, LA
Built 2005 Load: 31.8 t ADT: 6,456
Oakley Cemetery Rd
GoodOver: DEER CREEK
LOGMI 0.81 FR 076 TO 077, Franklin, LA
Built 2006 Load: 31.8 t ADT: 50
Mark Franks Rd
GoodOver: LIL TURKEY CREEK CUTOFF
1.01 M. N OF ERNEST RD., Franklin, LA
Built 2006 Load: 31.8 t ADT: 100
Indian Bluff Rd
GoodOver: CREEK
LOG MI. 1.22 FR. 70 - ODE, LaSalle, LA
Built 1998 Load: 31.8 t ADT: 70
Churchpoint Rd
GoodOver: BAYOU NARCISSE
1.6 MI. E LA44 US61 JCT., Ascension, LA
Built 2000 Load: 31.8 t ADT: 1,200
I0110
GoodOver: LA 408; BADLEY ST; PARK
HARDING BLVD. TO LA 19, East Baton Rouge, LA
Built 1982 Load: 31.8 t ADT: 32,092
Bayou Rd
GoodOver: MARINGOUIN BAYOU
JCT LA 76 S MARINGOUIN, Iberville, LA
Built 1984 Load: 31.8 t ADT: 560
US0190
GoodOver: LIT NATALBANY R.
US0190, Livingston, LA
Built 1950 Load: 31.8 t ADT: 8,928
LA0433
GoodOver: BAYOU LIBERTY
2.48 MILES SOUTH US 190, St. Tammany, LA
Built 2010 Load: 31.8 t ADT: 9,174
OAK HARBOR BLVD
GoodOver: I-10
1.0M N LAKE PONTCHARTRAIN, St. Tammany, LA
Built 1989 Load: 31.8 t ADT: 8,602
Showing 7,451-7,500 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.