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
Liberty Chapel Rd
FairOver: BLACK CREEK
0.5 M. N. OF JCT. LA 122, Grant, LA
Built 1985 Load: 25.6 t ADT: 45
Emmanuel Rd
FairOver: BAYOU BARBUE
4.3 MILES WEST OF LA 490, Natchitoches, LA
Built 1984 Load: 25.6 t ADT: 114
Chester Diez Rd
FairOver: NEW RIVER
0.2 MI E I-10 LA429, Ascension, LA
Built 1970 Load: 25.6 t ADT: 250
LA0070
FairOver: DRAIN
3.3 M NE of LA 1&LA 70, Assumption, LA
Built 1977 Load: 25.6 t ADT: 11,166
Wax Rd
FairOver: DRAUGHAN CREEK
0.4 Mi E. of LA 3034, East Baton Rouge, LA
Built 1967 Load: 25.6 t ADT: 14,420
Port Hudson-Pride
FairOver: COPPER MILL BAYOU
2.6 MI. NW LA64 LA19, East Baton Rouge, LA
Built 1970 Load: 25.6 t ADT: 2,080
LA0016
FairOver: WILLIS BAYOU
1.6 Mi N of LA 42, Livingston, LA
Built 1982 Load: 25.6 t ADT: 10,070
US0190
FairOver: YELLOW WATER RIVER
US0190, Tangipahoa, LA
Built 1969 Load: 25.6 t ADT: 14,856
W Esplanade Ave
FairOver: CANAL NO 2
.1 mile west of Transcon., Jefferson, LA
Built 2000 Load: 25.9 t ADT: 1,250
LA3257
FairOver: PAILET CANAL
1.00 MI. WEST OF LA 302, Jefferson, LA
Built 1996 Load: 25.9 t ADT: 876
BETTY ST
FairOver: MAYRONNE CANAL
0.2MI.SOUTH OF MONTG, Jefferson, LA
Built 1970 Load: 25.9 t ADT: 200
I0010
FairOver: 17TH STR CANAL & CITY ST
0.01 MILE WEST OF I-10 AN, Orleans, LA
Built 2000 Load: 25.9 t ADT: 137,542
US0090-B
FairOver: MISSISSIPPI RIVER
US 90B OVER LA 428, Orleans, LA
Built 1957 Load: 25.9 t ADT: 67,143
S. Broad St Exit
FairOver: STREETS
1.5 MI S OF TULANE AVENUE, Orleans, LA
Built 1951 Load: 25.9 t ADT: 5,441
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 25.9 t ADT: 259
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1975 Load: 25.9 t ADT: 2,800
Sittig Rd
FairOver: Drainage Canal
0.03 Mi W. of La 13, Acadia, LA
Built 1970 Load: 25.9 t ADT: 2,736
LA0724
FairOver: I0010
.84 Mi. North of US 90, Lafayette, LA
Built 1968 Load: 25.9 t ADT: 1,839
Ina Clare Dr.
FairOver: DRAINAGE CANAL
.07 Mi. SE of Park Ave, St. Landry, LA
Built 1974 Load: 25.9 t ADT: 500
Dalton Rd
FairOver: COULEE
1.2 Mi W of La 695, Vermilion, LA
Built 2005 Load: 25.9 t ADT: 212
US0171
FairOver: DRAIN
0.9 MI. N. OF LA 511, Caddo, LA
Built 1959 Load: 25.9 t ADT: 16,933
Pintail Rd
FairOver: MILL CREEK TRIB
0.5M EAST OF JOHNS GIN RD, Caddo, LA
Built 1992 Load: 25.9 t ADT: 57
Pine Grove Rd
FairOver: BUCHANAN BAYOU TRIB
2.5M EAST OF LA 525, Caddo, LA
Built 1991 Load: 25.9 t ADT: 58
SOUTH 6TH ST
FairOver: YOUNGS BAYOU DRAIN CANAL
.11 MI. SO. INT. HWY, Ouachita, LA
Built 1975 Load: 25.9 t ADT: 500
SOUTH 5TH ST
FairOver: YOUNGS BAYOU DRAIN CANAL
.19 MI. SO INT. HWY., Ouachita, LA
Built 1975 Load: 25.9 t ADT: 50
LA0877
FairOver: ALI BAYOU
2.36 MI E of LA 17, West Carroll, LA
Built 1981 Load: 25.9 t ADT: 284
BIG WOODS RD
FairOver: CANAL
.3 M N. LA 3063, Calcasieu, LA
Built 2000 Load: 25.9 t ADT: 887
KIRKMAN ST
FairOver: DRAINAGE CANAL
0.1 MI. N. OF 9TH ST, Calcasieu, LA
Built 1928 Load: 25.9 t ADT: 6,422
EDGERLY RD
FairOver: LITTLE INDIAN BAYOU
8.6 MI. N. OF US 90, Calcasieu, LA
Built 2000 Load: 25.9 t ADT: 445
LA0395
FairOver: DRAIN
5.4 MI NORTH OF I-10, Jefferson Davis, LA
Built 1957 Load: 25.9 t ADT: 3,596
US0165
FairOver: FISH CREEK
1.6 MI NORTH OF LA 524, Grant, LA
Built 1948 Load: 25.9 t ADT: 7,084
Camp Hardtner Rd.
FairOver: LITTLE CREEK
3.09 M. S. OF JCT. US 165, Grant, LA
Built 1985 Load: 25.9 t ADT: 90
Hooper Rd
FairOver: HORSEPEN CREEKRSEPEN CR.
2.25 M N OF B. MILLER RD., Rapides, LA
Built 1984 Load: 25.9 t ADT: 250
School House Rd
FairOver: BAYOU RAPIDES
JCT LA 1202&SCH HOUSE RD, Rapides, LA
Built 1993 Load: 25.9 t ADT: 290
Myland Dr
FairOver: BAYOU RIGOLETTE TRIB.
0.17 MI. NW US 165, Rapides, LA
Built 2002 Load: 25.9 t ADT: 150
Bethel Rd
FairOver: WATERS BAYOU
2.74 MI. SOUTH OF LA 28, Rapides, LA
Built 1984 Load: 25.9 t ADT: 240
Gene Gunter Rd
FairOver: FLAGON BAYOU TRIBUTARY
2.25 MI. NORTH OF LA 28, Rapides, LA
Built 2001 Load: 25.9 t ADT: 250
LA0465
FairOver: GORDIE BRANCH
3.87 MI EAST OF LA 8, Vernon, LA
Built 1977 Load: 25.9 t ADT: 500
DAVID MIDKIFF RD
FairOver: CLEAR CREEK
1.97 M N OF HARVEY X-ING, Vernon, LA
Built 1984 Load: 25.9 t ADT: 30
LA0547
FairOver: BRUSHY CREEK
0.68 M W of LA 845, Caldwell, LA
Built 1982 Load: 25.9 t ADT: 606
LA3251
FairOver: SMITH BAYOU
2.9 Mi NE of LA 75, Ascension, LA
Built 1969 Load: 25.9 t ADT: 4,016
LA0059
FairOver: LITTLE CREEK
0.2 MI N I-12, St. Tammany, LA
Built 1972 Load: 25.9 t ADT: 14,110
Firetower Rd
FairOver: CEDAR CREEK
2.30 M S of US 190, Tangipahoa, LA
Built 2001 Load: 25.9 t ADT: 1,160
Chess Jones Rd
FairOver: CANAL
.20 MILE E OF JCT LA 16, Washington, LA
Built 1984 Load: 25.9 t ADT: 700
Pecue Ln
FairOver: CLAY CUT BAYOU
3.0 MI SE JCT I-12 U, East Baton Rouge, LA
Built 1980 Load: 26.0 t ADT: 9,812
LA0550
FairOver: CREEK
7.5 MI NORTH OF LA 2, Union, LA
Built 1956 Load: 26.1 t ADT: 464
S TENTH ST
FairOver: CANEY CREEK
0.1 MILES SOUTH OF LA 383, Allen, LA
Built 1979 Load: 26.1 t ADT: 284
LA0499
FairOver: CREEK
10.2 MI NORTH OF LA 126, Winn, LA
Built 1967 Load: 26.1 t ADT: 114
Elbert Stewart Rd
FairOver: TAYLOR BRANCH
8.5 MI. NE OF 43 EXIT, Livingston, LA
Built 1980 Load: 26.1 t ADT: 70
US0090-B
FairOver: ON RAMP TO US 90 BUS WB
0.05 MI WEST OF LA 45, Jefferson, LA
Built 1992 Load: 26.2 t ADT: 15,955
Showing 2,101-2,150 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.