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
Homer Richard Rd.
GoodOver: Bayou Plaquemine Brule
0.5 Mi. E. of La 35, St. Landry, LA
Built 1994 Load: 18.5 t ADT: 400
Falcon Rd
GoodOver: Drainage Canal
0.48 Mi N of US 190, St. Landry, LA
Built 1994 Load: 18.5 t ADT: 35
S. Aladin Rd
GoodOver: TIGRE BAYOU
0.3 Mi S of Jude Rd, Vermilion, LA
Built 1987 Load: 18.5 t ADT: 324
LINE AVE
GoodOver: OCKLEY DITCH
1.8 MI NO OF LA 511, Caddo, LA
Built 1996 Load: 18.5 t ADT: 18,000
FLOWERS RD
GoodOver: DARBONNE BAYOU
1.2 MI SW of US 167, Lincoln, LA
Built 2001 Load: 18.5 t ADT: 70
RED CUT RD
GoodOver: RAWLS BRANCH
0.90 MI W of LA 557, Ouachita, LA
Built 1992 Load: 18.5 t ADT: 354
DOUBLE BRIDGES RD
GoodOver: CANE CREEK
1.5 MI SE of US 167, Union, LA
Built 1994 Load: 18.5 t ADT: 223
PILGRIM REST CH RD
GoodOver: DAVIS CREEK
5.2 MI NW of LA 15, Union, LA
Built 1998 Load: 18.5 t ADT: 366
IKES RD
GoodOver: KINDER DITCH
0.6 MI W of US 165, Allen, LA
Built 1999 Load: 18.5 t ADT: 136
MAHAFFEY RD
GoodOver: FLAT CREEK
2.5 MI SOUTH OF LA 26, Allen, LA
Built 1998 Load: 18.5 t ADT: 110
TANK FARM RD
GoodOver: CREEK
1.1 MI EAST OF LA 384, Calcasieu, LA
Built 1986 Load: 18.5 t ADT: 1,430
ABELL ROAD
GoodOver: EAST BAYOU LACASSINE
0.5 MI W of LA 99, Jefferson Davis, LA
Built 1999 Load: 18.5 t ADT: 350
ESTES ROAD
GoodOver: DRAIN
0.7 MI E of US 165, Jefferson Davis, LA
Built 1999 Load: 18.5 t ADT: 200
Elderwood Rd
GoodOver: DRAINAGE DITCH
APP. 1 MI. N. OF LA 114, Avoyelles, LA
Built 1992 Load: 18.5 t ADT: 530
LA0959
GoodOver: LITTLE SANDY CK
3.1 M East of LA 67, East Feliciana, LA
Built 1960 Load: 18.5 t ADT: 1,679
LA0959
GoodOver: SCALAUS CREEK
1.8 M E of LA 959&LA 409, East Feliciana, LA
Built 1960 Load: 18.5 t ADT: 1,679
marion St
GoodOver: CREEK
1.2 MI E LA 59 MARION ST., St. Tammany, LA
Built 1996 Load: 18.5 t ADT: 300
Sic Jenkins Rd
GoodOver: BOGUE LUSA CREEK
1.3 MILES N. OF HWY LA 60, Washington, LA
Built 1995 Load: 18.5 t ADT: 543
Monroe Cr. Rd
GoodOver: THOMAS CREEK BRIDGE
6.53 MI W. OF HWY 21, Washington, LA
Built 1996 Load: 18.5 t ADT: 390
Old Columbia Rd
GoodOver: ARD CREEK BRIDGE
1.6 MI N. OF HWY 438, Washington, LA
Built 1996 Load: 18.5 t ADT: 334
ELIZARDI BLVD
GoodOver: MAGELLAN CANAL
0.4MI.SOTH OF LA.428, Orleans, LA
Built 1970 Load: 18.8 t
Dinkins Drive
GoodOver: DINKINS DR.@MO.PAC.RR
0.3 MI.S. LA.511, Caddo, LA
Built 1982 Load: 18.8 t ADT: 259
NORTH NINTH ST
GoodOver: CREEK
0.2 MI N of LA 26, Allen, LA
Built 2007 Load: 18.8 t ADT: 119
Columbia Rd
GoodOver: Brushy Creek
0.5 Mi S of Roy Watson Rd, Catahoula, LA
Built 1986 Load: 18.8 t ADT: 50
LA0070
GoodOver: BAYOU CHOUPIQUE
0.4 M E of LA 69&LA 70, Assumption, LA
Built 1958 Load: 18.8 t ADT: 5,760
US0051
GoodOver: DRAIN
0.2 M S OF LA 10, Tangipahoa, LA
Built 1957 Load: 18.8 t ADT: 6,067
LA0104
GoodOver: BEACONS GULLY
1.9 Mi E of LA 13, Evangeline, LA
Built 2008 Load: 19.1 t ADT: 2,203
Chastant Rd
GoodOver: Romero Branch Canal
1.21 Mi. SE. of La 89, Iberia, LA
Built 2011 Load: 19.1 t ADT: 215
LA0343
GoodOver: B QUEUE DE TORTUE
0.3 MI SOUTH OF US 90, Lafayette, LA
Built 1957 Load: 19.1 t ADT: 5,472
Fire Station Rd
GoodOver: BAYOU BEOUF
0.01 Mi S of LA 182, St. Landry, LA
Built 2005 Load: 19.1 t ADT: 250
FDR 145
GoodOver: HURRICANE
NO DATA ENTERED, Grant, LA
Built 1970 Load: 19.1 t ADT: 13
US0190
GoodOver: LIVELY BAYOU
US0190, East Baton Rouge, LA
Built 1958 Load: 19.1 t ADT: 24,571
Hamilton Rd
GoodOver: Dairy Creek
3.8 Mi. NE of US 61, West Feliciana, LA
Built 2022 Load: 19.1 t ADT: 40
LA0965
GoodOver: CHANEY CREEK
LA0965, West Feliciana, LA
Built 1959 Load: 19.1 t ADT: 2,133
US0190
GoodOver: GREYS CREEK
0.2 M E OF LA 16, Livingston, LA
Built 1956 Load: 19.1 t ADT: 17,500
LA0064
GoodOver: BEAVER CREEK
LA0064, Livingston, LA
Built 1955 Load: 19.1 t ADT: 13,798
Blackmud Rd
GoodOver: COLYELL CREEK
2.5 M N/E OF 447 EXIT, Livingston, LA
Built 1998 Load: 19.1 t ADT: 300
CRAWFORD ROAD
GoodOver: LITTLE GUM BAYOU
0.87 MI WEST OF LA 41, St. Tammany, LA
Built 1998 Load: 19.1 t ADT: 280
LA0040
GoodOver: TANGIPAHOA RIVER
1.3 Miles East of US 51, Tangipahoa, LA
Built 1965 Load: 19.1 t ADT: 4,748
LA1064
GoodOver: EAST PONCHATOULA CREEK
0.66 MI. EAST OF LA 1065, Tangipahoa, LA
Built 1957 Load: 19.1 t ADT: 2,854
LA0450
GoodOver: LITTLE SILVER CR
LA0450, Washington, LA
Built 1957 Load: 19.1 t ADT: 276
Yolande Dr.
GoodOver: COULEE
0.03 Mi NE of Rena Dr, Lafayette, LA
Built 1965 Load: 19.4 t ADT: 550
2nd St
GoodOver: RICHARDS GULLY
0.12 Mi S of LA 13, St. Landry, LA
Built 1985 Load: 19.4 t ADT: 410
PINES RD
GoodOver: GILMER BAYOU
0.3 MI. SO. OF LA 51, Caddo, LA
Built 1969 Load: 19.4 t ADT: 2,000
US0090
GoodOver: CREEK
2.5 MI EAST OF LA 35, Acadia, LA
Built 1932 Load: 19.8 t ADT: 5,359
Standard Mill Rd
GoodOver: COULEE
0.47 Mi. E. of La 35, Acadia, LA
Built 1993 Load: 19.8 t ADT: 3,600
Griffin Rd
GoodOver: LA SALLE COULEE
1.0 Mi NE of LA 89, Lafayette, LA
Built 1998 Load: 19.8 t ADT: 2,420
S. Fieldspan Rd.
GoodOver: GRANGES COULEE
0.3 MI S of LA 342, Lafayette, LA
Built 1996 Load: 19.8 t ADT: 1,400
Osage Trail
GoodOver: Bayou Bourdeaux
0.5 Mi. N. of La 365, St. Landry, LA
Built 1987 Load: 19.8 t ADT: 540
Bihm Rd
GoodOver: DRAINGE CANAL
0.1 miles West of LA 35, St. Landry, LA
Built 2000 Load: 19.8 t ADT: 150
Showing 6,401-6,450 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.