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
I0055
GoodOver: BEAVER CREEK
0.3 Miles north of LA 440, Tangipahoa, LA
Built 1966 Load: 28.8 t ADT: 21,762
I0610
GoodOver: OFF RP TO PARIS AVE
3.3 MI EAST OF I-10, Orleans, LA
Built 1974 Load: 29.0 t ADT: 7,620
Norris Rd
GoodOver: CREEK
0.5 MI N of LA 675, Iberia, LA
Built 1966 Load: 29.0 t ADT: 749
Eraste Landry Rd
GoodOver: MINE COULEE
0.7 MI W of LA 3184, Lafayette, LA
Built 2001 Load: 29.0 t ADT: 8,580
I0049
GoodOver: US79-80 I20 & RRS
.54 M. NO OF US 80, Caddo, LA
Built 1993 Load: 29.0 t ADT: 78,214
I0049
GoodOver: LA 1200
I-49 / LA 1200 INTG., Rapides, LA
Built 1989 Load: 29.0 t ADT: 25,477
I0049
GoodOver: LA 1200
I-49 / LA 1200 INTG., Rapides, LA
Built 1989 Load: 29.0 t ADT: 11,969
US0165
GoodOver: BLACK BAYOU
0.5 MI S OF LA 506, Caldwell, LA
Built 1945 Load: 29.0 t ADT: 12,669
US0165
GoodOver: LITTLE BLACK BAY
1.9 MI SOUTH OF LA 844, Caldwell, LA
Built 1945 Load: 29.0 t ADT: 6,071
LA0124
GoodOver: BODCAW CANAL
6.4 MI SOUTH OF LA 564, Catahoula, LA
Built 1967 Load: 29.0 t ADT: 410
LA0921
GoodOver: TAGUE BAYOU
1.9 MI NORTH OF LA 567, Catahoula, LA
Built 1964 Load: 29.0 t ADT: 145
LA0861
GoodOver: BAYOU HURRICANE
.8 MI EAST OF LA 17, Franklin, LA
Built 1964 Load: 29.0 t ADT: 198
LA0861
GoodOver: HURRICANE SLOUGH
1.61 MI EAST OF LA 17, Franklin, LA
Built 1964 Load: 29.0 t ADT: 198
LA0861
GoodOver: DEWITT GULLEY
1.7 MI EAST OF LA 17, Franklin, LA
Built 1964 Load: 29.0 t ADT: 198
LA0871
GoodOver: GOOSE CREEK
2.2 MI WEST OF LA 562, Franklin, LA
Built 1967 Load: 29.0 t ADT: 141
LA0869
GoodOver: PINE BAYOU
1.5 MI NORTH OF LA 618, Franklin, LA
Built 1965 Load: 29.0 t ADT: 455
LA0869
GoodOver: MOUND BAYOU
2.1 MI NORTH OF LA 618, Franklin, LA
Built 1965 Load: 29.0 t ADT: 455
Elliot Rd
GoodOver: DRAINAGE BAYOU
1.3 Mi N of HooShooToo, East Baton Rouge, LA
Built 2000 Load: 29.0 t ADT: 6,230
Vermont St
GoodOver: CORPORATION CANAL
WEST POLK STREET B.R., East Baton Rouge, LA
Built 1996 Load: 29.0 t ADT: 300
N. Flannery Rd
GoodOver: SHARP STATION CANAL
0.7 MI S LA 37, East Baton Rouge, LA
Built 2000 Load: 29.0 t ADT: 6,609
LA3255
GoodOver: CLEAR CREEK
LA0961, East Feliciana, LA
Built 1967 Load: 29.0 t ADT: 174
LA0076
GoodOver: LOWER MARINGOUIN CANAL
2.3 M N of LA 3000, Iberville, LA
Built 1964 Load: 29.0 t ADT: 7,562
LA0984
GoodOver: STUMPY BAYOU
2.7 M N of LA 984&LA 620, West Baton Rouge, LA
Built 1965 Load: 29.0 t ADT: 2,446
LA0444
GoodOver: BAYOU BARBARY
LA 0444, Livingston, LA
Built 1965 Load: 29.0 t ADT: 3,782
I0010
GoodOver: RESERVE RELIEF CANAL
I 10, St. John the Baptist, LA
Built 1974 Load: 29.0 t ADT: 27,551
LA1056
GoodOver: BICKHAM BRANCH
1.0 M N OF LA 440, Washington, LA
Built 1966 Load: 29.0 t ADT: 993
US0090
GoodOver: LA 18 AND 541
1.0 MI S OF THE MISSISSIP, Jefferson, LA
Built 2013 Load: 29.2 t ADT: 55,210
US0090
GoodOver: LA 48 AND LA 611-1
0.0 MI NORTH OF MISSISSIP, Jefferson, LA
Built 2013 Load: 29.2 t ADT: 30,800
I0010
GoodOver: METAIRIE RELIEF CANAL
1 MILE WEST OF CARROLLTON, Orleans, LA
Built 2006 Load: 29.2 t ADT: 12,220
Cora St.
GoodOver: COULEE MINE BRANCH
0.02 MI N of W. Willow St, Lafayette, LA
Built 1981 Load: 29.2 t ADT: 1,201
US0090
GoodOver: CREEK
6.24 Mi E of LA 182, St. Mary, LA
Built 1998 Load: 29.2 t ADT: 4,014
SOUTH LAKESHORE DR
GoodOver: PAGE BAYOU
4.1 MI E OF LA 169, Caddo, LA
Built 1982 Load: 29.2 t ADT: 475
Hosston Rodessa Rd
GoodOver: TRIB.TO BLACKLAKE BAYOU
2.0 M. W. OF US 71, Caddo, LA
Built 1998 Load: 29.2 t ADT: 57
Mira Scotts Slu
GoodOver: KELLY BAYOU
1.0 M EAST OF US 71, Caddo, LA
Built 1989 Load: 29.2 t ADT: 150
Funsten Rd
GoodOver: CASTOR BAYOU RELIEF
1.8 MI. EAST OF LA 5, De Soto, LA
Built 2006 Load: 29.2 t ADT: 30
Tom Benson Rd
GoodOver: TOM BENSON RD COW CREEK
3.0 MI WEST OF LA 259, Webster, LA
Built 1985 Load: 29.2 t ADT: 176
E BEAR LAKE RD #3
GoodOver: BULL BAYOU
4.1 MI W of US 65, Madison, LA
Built 1999 Load: 29.2 t ADT: 144
RICHARDSON RD
GoodOver: DRAIN TO BAYOU CHOUDRANT
0.75 MILES EAST OF LA 837, Ouachita, LA
Built 2011 Load: 29.2 t ADT: 180
MCGEE RD
GoodOver: MIDDLE CREEK TRIB.
MCGEE ROAD, Sabine, LA
Built 2004 Load: 29.2 t ADT: 60
CASTOR LAKE RD
GoodOver: LIBERTY CREEK
1.0M SE OF LA 468, Vernon, LA
Built 1992 Load: 29.2 t ADT: 70
Sparrow Rd
GoodOver: TROUT CREEK
0.5 Miles North of LA 8, LaSalle, LA
Built 2013 Load: 29.2 t ADT: 300
Turnley Rd
GoodOver: BEAR BRANCH
0.3 miles SW of US 84 E, LaSalle, LA
Built 2011 Load: 29.2 t ADT: 130
Penn Blvd
GoodOver: HENDERSON BAYOU
0.1 M N of LA933, Ascension, LA
Built 1992 Load: 29.2 t ADT: 60
US0090
GoodOver: GROUND
1.0 M W of US 90&LA 662, Assumption, LA
Built 1998 Load: 29.2 t ADT: 12,192
LA0440
GoodOver: CREEK
0.37 MI E OF LA 1061, Tangipahoa, LA
Built 2015 Load: 29.2 t ADT: 752
LA0440
GoodOver: PITTS CREEK
4.5 MI EAST JCT. LA 1057, Tangipahoa, LA
Built 2002 Load: 29.2 t ADT: 752
RIDGELAKE DR
GoodOver: CANAL NO. 2
0.1 MI EAST OF CAUSEWAY, Jefferson, LA
Built 2003 Load: 29.5 t
S NORMAN C FRANCIS
GoodOver: WASHINGTON AVE CANAL
0.0 MI NE OF WASHINGTON A, Orleans, LA
Built 1990 Load: 29.5 t ADT: 1,000
S NORMAN C FRANCIS
GoodOver: WASHINGTON AVE CANAL
0.04 MI SW OF CALLIOPE ST, Orleans, LA
Built 1990 Load: 29.5 t ADT: 1,000
LA0039
GoodOver: CHALMETTE VISTA
1.9 MI NORTH OF LA 36, St. Bernard, LA
Built 2001 Load: 29.5 t ADT: 47,739
Showing 7,201-7,250 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.