Total Bridges
12,699
Public highway bridges in Louisiana
State profile · Above national median SD
Louisiana bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Louisiana — drawn straight from the FHWA National Bridge Inventory.
- 12,699
- Public bridges
- 36.2%
- Good condition
- 11.0%
- Poor condition
- 11.0%
- Structurally deficient
Good Condition
36.2%
4,603 bridges rated 7-9
-13.8pp vs 50% benchmark
Poor Condition
11.0%
1,397 bridges rated 0-4
Structurally Deficient
11.0%
1,397 bridges flagged for repair priority
4.0pp vs national avg 7.0%
Louisiana vs national bridge condition
Louisiana — Good condition share 36.2%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Louisiana — Structurally deficient share 36.7%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Louisiana (FHWA NBI)
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 323 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 on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Louisiana on the same metric.
42
Pennsylvania
10.50% top marginal rate
38
North Dakota
10.84% top marginal rate
22
Louisiana
11.00% top marginal rate
72
Puerto Rico
11.98% top marginal rate
23
Maine
13.23% top marginal rate
Bridges Needing Most Attention in Louisiana
Six lowest-condition bridges in Louisiana, ranked by composite NBI rating. Each is inspected at least every 24 months.
Layton Coco Xing
Structurally DeficientOver: BAYOU DES GLAISES
0.01 MI. EAST OF LA 451, Avoyelles, LA
Built 1986 Load: 0.9 t ADT: 40
LA1077
Structurally DeficientOver: BLACK BAYOU
1.1 M S OF LA 22, St. Tammany, LA
Built 1965 Load: 0.9 t ADT: 1,019
LA0308
Structurally DeficientOver: BAYOU LAFOURCHE
.01 MI NORTH OF LA 1, Lafourche, LA
Built 1970 Load: 1.0 t ADT: 5,198
Ebeneezer Tap Rd
PoorOver: JONES CREEK
0.65 Mi South of LA 500, LaSalle, LA
Built 1989 Load: 1.2 t ADT: 300
Anderson Rd
Structurally DeficientOver: HYDE BR.
2 MI S OF 1054 & 440, Tangipahoa, LA
Built 1960 Load: 1.2 t ADT: 25
Stubblefield Rd
PoorOver: BAYOU ROUGE
APPROX. 1 M. S. OF LA 361, Avoyelles, LA
Built 1975 Load: 2.3 t ADT: 40
All Bridges in Louisiana
Thompson Creek Rd
PoorOver: SHADY GROVE BRANCH
0.9 M W of LA 19, East Feliciana, LA
Built 1996 Load: 19.1 t ADT: 70
LA0076
PoorOver: STREAM NO NAME
0.9 M NE of LA 411, Iberville, LA
Built 1952 Load: 19.1 t ADT: 7,562
LA0075
PoorOver: BAYOU BREAUX
0.67 M N of LA 75, Iberville, LA
Built 1969 Load: 19.1 t ADT: 2,943
LA0155
PoorOver: CREEK
4.6 MI EAST OF LA 542, Jackson, LA
Built 1960 Load: 19.1 t ADT: 351
LA0822
PoorOver: CYPRESS BAYOU
3.35 MI EAST OF US 167, Lincoln, LA
Built 1953 Load: 19.1 t ADT: 1,568
US0071
PoorOver: CHEVREUILLE B.
1.7 MI. N OF INT LA477, Natchitoches, LA
Built 1956 Load: 19.1 t ADT: 1,691
LA0117
PoorOver: ST. JOHNS CREEK
0.58 MI. SOUTH OF LA 6, Natchitoches, LA
Built 1977 Load: 19.1 t ADT: 3,420
Read BLVD
PoorOver: MORRISON CANAL
1.0MI.N.OF I-10, Orleans, LA
Built 1960 Load: 19.1 t
LOVELADY RD
PoorOver: LONGS CREEK
3 MI NW LUNA FIRETOW, Ouachita, LA
Built 1965 Load: 19.1 t ADT: 23
LA0456
PoorOver: BAYOU LAMOURIE
0.01 MI. EAST OF LA 470, Rapides, LA
Built 1950 Load: 19.1 t ADT: 1,009
LA1204
PoorOver: FLAGON BAYOU
1.38 MI. E OF LA3225, Rapides, LA
Built 1973 Load: 19.1 t ADT: 2,440
LA0350
PoorOver: BAYOU TECHE PARKS
0.36 Mi NE of LA 31, St. Martin, LA
Built 1950 Load: 19.1 t ADT: 3,378
LA0022
PoorOver: BEDICO CREEK
2.6 Mi E of La 445, Tangipahoa, LA
Built 1938 Load: 19.1 t ADT: 6,775
LA1072
PoorOver: DRAIN
0.9 M E OF LA 16, Washington, LA
Built 1954 Load: 19.1 t ADT: 1,105
US0080
PoorOver: CREEK
1.91 MI EAST OF LA 159, Webster, LA
Built 1954 Load: 19.1 t ADT: 3,955
LA0965
PoorOver: THOMPSON CRK TRIB
1.1 M S of LA 10&LA 965, West Feliciana, LA
Built 1969 Load: 19.1 t ADT: 525
LA0126
PoorOver: MILL CREEK
.7 MI WEST OF LA 1233, Winn, LA
Built 1941 Load: 19.1 t ADT: 310
ROCKY SPRINGS RD
PoorOver: BAYOU DUPONT
ROCKY SPRINGS ROAD, Sabine, LA
Built 1955 Load: 19.2 t ADT: 75
Six Mile Rd
PoorOver: SIX MILE CREEK
2.7 MI. NO. OF LA 4, Bienville, LA
Built 1975 Load: 19.3 t ADT: 80
Log Ferry Rd
PoorOver: Posten Bayou
4.5M NORTH OF HWY 537, Bossier, LA
Built 1992 Load: 19.3 t ADT: 80
Giled Rd
PoorOver: BLUFF CREEK
4.0 M S of LA 10, East Feliciana, LA
Built 1979 Load: 19.3 t ADT: 68
LA0148
PoorOver: CREEK
3.06 MI SOUTH OF LA 34, Jackson, LA
Built 1949 Load: 19.3 t ADT: 318
Belle Gardner Rd
PoorOver: CATCA CREEK
2 MI SW OF JCT 16 & 450, Tangipahoa, LA
Built 1985 Load: 19.3 t ADT: 55
KIRKMAN ST
PoorOver: CONTRABAND BAYOU
0.25 MI N OF LA 3186, Calcasieu, LA
Built 1964 Load: 19.4 t ADT: 6,090
LA0518
PoorOver: BAYOU DARBONNE
2.60 MI NORTH OF LA 146, Claiborne, LA
Built 1979 Load: 19.4 t ADT: 389
LYONS RD.
PoorOver: THORNWELL DRAINAGE CANAL
0.6 MI S of LA 380, Jefferson Davis, LA
Built 1974 Load: 19.4 t ADT: 75
US0167
PoorOver: COULEE MINE
2.58 MI E OF LA 3073, Lafayette, LA
Built 1958 Load: 19.4 t ADT: 27,213
LA0830-6
PoorOver: HORSE BAYOU
1.30 MI NORTH OF US 165, Morehouse, LA
Built 1971 Load: 19.4 t ADT: 4,905
BAGGETT RD
PoorOver: CREEK
0.8 MI N of LA 26, Allen, LA
Built 1982 Load: 19.8 t ADT: 60
US0171
PoorOver: BUCHANAN BAYOU
3.3 MI. S. OF LA 526, Caddo, LA
Built 1953 Load: 19.8 t ADT: 16,911
LA0378
PoorOver: W FORK CALCASIEU RIVER
3.27 MI W OF US 171, Calcasieu, LA
Built 1968 Load: 19.8 t ADT: 13,371
RIVER RD
PoorOver: KINNER GULLY
0.5 MI NE OF LA 3059, Calcasieu, LA
Built 1987 Load: 19.8 t ADT: 1,608
BIG WOODS-STARKS
PoorOver: BIRD ISLAND BAY
4.6 MI E of LA 109, Calcasieu, LA
Built 1968 Load: 19.8 t ADT: 1,152
Milldale Rd
PoorOver: WIND BAYOU
2.1 MI. SOUTH OF PRIDE, East Baton Rouge, LA
Built 1958 Load: 19.8 t ADT: 377
Read BLVD
PoorOver: MORRISON CANAL
1.0MI.N.OF I-10, Orleans, LA
Built 1960 Load: 19.8 t
LA0143
PoorOver: D'ARBONNE BAYOU
2.8 MI NORTH OF LA 616, Ouachita, LA
Built 1962 Load: 19.8 t ADT: 3,674
Gills Rd
PoorOver: DRAINAGE CANAL
0.10 MI N of Credeur Rd, St. Landry, LA
Built 1970 Load: 19.8 t ADT: 100
Rousseau Rd
PoorOver: TCHEFUNETE RIVER
0.45 MILES NORTH OF LA.10, St. Tammany, LA
Built 1973 Load: 19.8 t ADT: 458
LA0040
PoorOver: NATALBANY RIVER
0.5 M W OF I-55, Tangipahoa, LA
Built 1971 Load: 19.8 t ADT: 913
LA0965
PoorOver: THOMPSON CREEK TRIBUTARY
LA0965, West Feliciana, LA
Built 1973 Load: 19.8 t ADT: 525
LA0107
PoorOver: WIGGINS BAYOU
4.31 MI. NORTH OF LA 115, Avoyelles, LA
Built 1953 Load: 20.0 t ADT: 3,354
Wallace Rd
PoorOver: Stillhouse Bayou Trib
0.4 M SOUTH OF LA 537, Bossier, LA
Built 1991 Load: 20.0 t ADT: 40
Lower CC Rd
PoorOver: HORTON BAYOU
3.0 M NE of LA 63, East Feliciana, LA
Built 1999 Load: 20.0 t ADT: 44
Chinquapin St
PoorOver: CREEK
0.1 MI E OF INT 535, Livingston, LA
Built 1960 Load: 20.0 t ADT: 200
LA0002
PoorOver: BAYOU DELEMAR
1.44 MI EAST OF US 165, Morehouse, LA
Built 1955 Load: 20.0 t ADT: 2,815
C. RAWLS RD
PoorOver: PRAIRION BAYOU
0.92 MI NE INT. 42 O, Ouachita, LA
Built 1960 Load: 20.0 t ADT: 37
LA0463
PoorOver: BOGGY BRANCH
2.8 MI NORTH OF LA 10, Vernon, LA
Built 1944 Load: 20.0 t ADT: 482
US0167
PoorOver: BIG CREEK RELIEF
2.46 MILE NORTH OF LA 126, Winn, LA
Built 1952 Load: 20.0 t ADT: 5,107
LA0092
PoorOver: CANAL
2.5 MI East OF LA 13, Acadia, LA
Built 1973 Load: 20.1 t ADT: 352
LA0431
PoorOver: BLACK BAYOU
2.16 MI N JCT US 61, Ascension, LA
Built 1983 Load: 20.1 t ADT: 9,608
Showing 11,801-11,850 of 12,699 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |