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
LA0109
FairOver: BESS BRANCH
4.3 MI N OF LA 12, Calcasieu, LA
Built 2010 Load: 31.8 t ADT: 1,749
LA0109
FairOver: BAYOU
2.1 MI N OF LA 12, Calcasieu, LA
Built 2010 Load: 31.8 t ADT: 1,749
US0090
FairOver: I-10
0.4 MI S OF LA 3112, Calcasieu, LA
Built 1966 Load: 31.8 t ADT: 4,815
LA0397
FairOver: I-10
0.3 MI N OF LA 3020, Calcasieu, LA
Built 1964 Load: 31.8 t ADT: 9,291
I0010
FairOver: V.E. WASHINGTON AVE
7.4 MI E OF LA 108, Calcasieu, LA
Built 1961 Load: 31.8 t ADT: 71,437
I0010
FairOver: MO PACIFIC RR
1.8 MI W OF US 171, Calcasieu, LA
Built 1961 Load: 31.8 t ADT: 11,437
I0010
FairOver: SHATTUCK ST
0.4 MI E OF US 90B, Calcasieu, LA
Built 1963 Load: 31.8 t ADT: 71,437
I0010
FairOver: SHATTUCK ST
1.5 MI W OF US 171, Calcasieu, LA
Built 1963 Load: 31.8 t ADT: 11,437
I0210
FairOver: I210 NB TO I10 WB
I-210 NB TO I-10 WB, Calcasieu, LA
Built 1977 Load: 31.8 t ADT: 3,857
LA0119
FairOver: BAYOU CYPRE
9.49 MI. NORTH OF LA 8, Natchitoches, LA
Built 1964 Load: 31.8 t ADT: 189
US0167
FairOver: US167 FR RDS CITY ST R
0.82 M. N. OF RED RIVER, Rapides, LA
Built 1966 Load: 31.8 t ADT: 27,628
LA0454
FairOver: PILLARS CREEK
4.85 MI. SOUTH OF LA 107, Rapides, LA
Built 1947 Load: 31.8 t ADT: 226
I0049
FairOver: LA 121
1.65 MI. NORTH OF LA 1200, Rapides, LA
Built 1989 Load: 31.8 t ADT: 25,477
Messina Rd
FairOver: BAYOU BOEUF
1.01 MI. SOUTH OF LA 28, Rapides, LA
Built 1989 Load: 31.8 t ADT: 260
Cotton Island Rd
FairOver: FLAGON BAYOU
4 MI NORTH OF HOLLOWAY, Rapides, LA
Built 2005 Load: 31.8 t ADT: 200
US0171
FairOver: BAYOU SAN PATRICIO
2.6 MI. NORTH OF LA 483, Sabine, LA
Built 1977 Load: 31.8 t ADT: 3,585
LA0111
FairOver: BAYOU ANACOCO
14.0 MI SOUTH OF LA 8, Vernon, LA
Built 1981 Load: 31.8 t ADT: 1,480
Seymore Rd
FairOver: TURKEY CREEK
0.5 MI FROM 575 TO 576, Franklin, LA
Built 1987 Load: 31.8 t ADT: 80
I0010
FairOver: US 61 & KCS RR
JCT of I-10 & US 61, Ascension, LA
Built 1975 Load: 31.8 t ADT: 21,372
LA0408
FairOver: BAYOU
0.1 M E of I-110&LA 408, East Baton Rouge, LA
Built 1976 Load: 31.8 t ADT: 26,976
I0010
FairOver: LA 427-ACADIAN TW/KCS RR
2.5 M W of I-10&I-12, East Baton Rouge, LA
Built 1964 Load: 31.8 t ADT: 32,092
I0110
FairOver: WYANDOTTE ST. ON RAMP
I0110, East Baton Rouge, LA
Built 1970 Load: 31.8 t ADT: 8,250
I0110
FairOver: LA 19/CNRR/FLTCHR WIN DR
1.4 Mi NW of LA 408, East Baton Rouge, LA
Built 1982 Load: 31.8 t ADT: 64,059
I0110
FairOver: LA 19/CNRR/FLTCHR WIN DR
0.5 Mi E of US 61, East Baton Rouge, LA
Built 1982 Load: 31.8 t ADT: 32,092
I0010
FairOver: BAYOU GROSSE TETE
I0010, Iberville, LA
Built 1972 Load: 31.8 t ADT: 557
I0010
FairOver: BAYOU GROSSE TETE
77 FT E OF LA 77, Iberville, LA
Built 1972 Load: 31.8 t ADT: 557
LA0001
FairOver: MO PACIFIC RR
LA0001, West Baton Rouge, LA
Built 1966 Load: 31.8 t ADT: 14,751
I0012 RAMP A
FairOver: US 190
2.6 M W OF LA 59, St. Tammany, LA
Built 1976 Load: 31.8 t ADT: 9,838
TOBIN Rd
FairOver: I-55
TOBIN ROAD OVER I-55, Tangipahoa, LA
Built 1970 Load: 31.8 t ADT: 3,660
LA1053
FairOver: LA 1053 OVER I-55
LA1053, Tangipahoa, LA
Built 1966 Load: 31.8 t ADT: 595
LA3124
FairOver: BOGUE LUSA CREEK
LA3124, Washington, LA
Built 1950 Load: 31.8 t ADT: 5,213
LA0437
FairOver: BOGUE CHITTO RIVER
LA0437, Washington, LA
Built 1970 Load: 31.8 t ADT: 2,058
LA1072
FairOver: LAWRENCE CREEK
LA1072, Washington, LA
Built 1975 Load: 31.8 t ADT: 1,105
MIRABEAU AVE
FairOver: BAYOU ST. JOHN
0.1 MI E OF WISNER BLVD., Orleans, LA
Built 2004 Load: 32.1 t
Potato Shed Rd
FairOver: BAYOU BERARD DRAIN CANAL
0.8 MI. E. OF HWY LA 678, St. Martin, LA
Built 1985 Load: 32.1 t ADT: 186
LA0157
FairOver: LA 157 OVER I-20
LA 157 OVER I-20, Bossier, LA
Built 1975 Load: 32.1 t ADT: 5,436
Walker Ferry Rd
FairOver: CLINTON BRANCH TRIB.
4.06 M. E. OF PERRY RD., Grant, LA
Built 1984 Load: 32.1 t ADT: 144
Bear Creek Rd
FairOver: BEAR CREEK
0.5 M. W. OF JCT LA 500, Grant, LA
Built 1984 Load: 32.1 t ADT: 85
Goldonna Rd
FairOver: CHEE CHEE CREEK
0.49 M. NE OF END LA 1226, Natchitoches, LA
Built 1984 Load: 32.1 t ADT: 133
Melder Rd
FairOver: SPRING CREEK
0.5 MI. SOUTH OF LA 112, Rapides, LA
Built 1984 Load: 32.1 t ADT: 375
Hoyt Rd
FairOver: COTILE LAKE
1.11 MI. NW OF LA 1200, Rapides, LA
Built 1969 Load: 32.1 t ADT: 300
DRAKES FORK RD
FairOver: HORSE BRANCH
4.0 MILES SOUTH OF LA 10, Vernon, LA
Built 1984 Load: 32.1 t ADT: 190
Welcome Home
FairOver: KIESHE CREEK
APPROX. .4 M. W. OF LA 34, Winn, LA
Built 1984 Load: 32.1 t ADT: 160
East Bradford St
FairOver: HEMPHILL CREEK
LOG MI 0.23 FROM 7 TO 8, LaSalle, LA
Built 1985 Load: 32.1 t ADT: 250
Sycamore St
FairOver: HEMPHILL CREEK
0.2 M N of US 84/LA 8, LaSalle, LA
Built 1984 Load: 32.1 t ADT: 250
LA0067
FairOver: REDWOOD CREEK
1.2 Mi N of LA 64, East Baton Rouge, LA
Built 1965 Load: 32.1 t ADT: 14,102
LA0010
FairOver: PRETTY CREEK
0.68 MILES WEST JCT LA 67, East Feliciana, LA
Built 2005 Load: 32.1 t ADT: 3,904
I0012
FairOver: LA 59
2.7 M E OF US 190, St. Tammany, LA
Built 1976 Load: 32.1 t ADT: 29,236
Bayou Pacquet
FairOver: BAYOU PAQUET
5.2 MI. W. OF LA 433, St. Tammany, LA
Built 1985 Load: 32.1 t ADT: 737
I0055
FairOver: COOLS CREEK
I0055, Tangipahoa, LA
Built 1966 Load: 32.1 t ADT: 21,762
Showing 2,951-3,000 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.