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
Wes Arledge Rd
PoorOver: HORNSBY CREEK
.2 W OF JCT US 190&LA1024, Livingston, LA
Built 2000 Load: 15.4 t ADT: 6
LA0117
PoorOver: FLATWOODS CREEK
0.34 MI. SOUTH OF LA 6, Natchitoches, LA
Built 1977 Load: 15.4 t ADT: 3,420
Division Rd
PoorOver: COULEE DU PORTAGE
0.2 Miles NE of LA 680, St. Martin, LA
Built 1965 Load: 15.4 t ADT: 129
Walsh Rd
PoorOver: YELLOW WATER RIVER
0.2 MI W of Happywoods Rd, Tangipahoa, LA
Built 1960 Load: 15.4 t ADT: 4
LA0463
PoorOver: BLUE BRANCH
1.3 MI NORTH OF LA 10, Vernon, LA
Built 1944 Load: 15.4 t ADT: 482
LA0399
PoorOver: HORSE BRANCH
0.2 MI N OF LA 112, Beauregard, LA
Built 1975 Load: 15.6 t ADT: 957
I0020
PoorOver: STL&SW-KCS RR/WESTERFIEL
1.04 MI EAST LA 1, Bossier, LA
Built 1966 Load: 15.6 t ADT: 69,892
BAILEY DRIVE
PoorOver: MACKS BAYOU
0.1 MI. NO. OF LA 78, Bossier, LA
Built 1960 Load: 15.6 t ADT: 568
Ida Missionary Rd
PoorOver: NANCE BRANCH
1 MI. E. US HWY 71, Caddo, LA
Built 1976 Load: 15.6 t ADT: 77
Fernwood Dr
PoorOver: DRAINAGE CANAL
450 Ft N of US 190, East Baton Rouge, LA
Built 1960 Load: 15.6 t ADT: 200
LA0472
PoorOver: BIG BEAR CREEK
7.9 MI EAST OF US 167, Grant, LA
Built 1938 Load: 15.6 t ADT: 88
Eighty Arpent Rd
PoorOver: Delahoussaye Canal
3.4 Miles SE of LA 673, Iberia, LA
Built 1967 Load: 15.6 t ADT: 19
LA0997
PoorOver: B PIGEON/LOWER GRAND R.
0.01 Mi. W of LA 75, Iberville, LA
Built 1957 Load: 15.6 t ADT: 845
Forest Rd
PoorOver: CANEY BRANCH
0.5 MILES NW OF LA 118, Natchitoches, LA
Built 1972 Load: 15.6 t ADT: 42
Shady Grove Rd
PoorOver: MIDDLE CREEK
1.33 MI. EAST OF LA 117, Natchitoches, LA
Built 1983 Load: 15.6 t ADT: 92
Shady Grove Rd
PoorOver: MIDDLE CREEK
1.22 MI. EAST OF LA 117, Natchitoches, LA
Built 1983 Load: 15.6 t ADT: 92
Shady Grove Rd
PoorOver: MIDDLE CREEK
1.06 MI. EAST OF LA 117, Natchitoches, LA
Built 1983 Load: 15.6 t ADT: 90
Olsen ave
PoorOver: BARRIERE ROAD
1.8 MI. S. OF HWY. 23, Plaquemines, LA
Built 1960 Load: 15.6 t
LA0182
PoorOver: CHARENTON
1.1 Miles South of LA 83, St. Mary, LA
Built 1941 Load: 15.6 t ADT: 6,242
LA0082
PoorOver: OLD ICC L PRAIRE
6.67 MI N. OF LA 3147, Vermilion, LA
Built 1965 Load: 15.6 t ADT: 2,899
Nation Rd.
PoorOver: Duralde Coulee
0.6 Mi. S. of La 13, Acadia, LA
Built 1970 Load: 15.9 t ADT: 336
SOUTH LAKESHORE DR
PoorOver: BICKHAM BAYOU
1.8 MI N OF US80, Caddo, LA
Built 1981 Load: 15.9 t ADT: 1,286
Ben Hur Rd
PoorOver: ELBOW BAYOU
1.8 M S of LA 30, East Baton Rouge, LA
Built 1960 Load: 15.9 t ADT: 752
Tiger Bend Rd
PoorOver: DRAINAGE BAYOU
2.9 MI. E. of LA 73, East Baton Rouge, LA
Built 1965 Load: 15.9 t ADT: 5,630
LA0579
PoorOver: COOK'S SLOUGH
1.33 MI SOUTH OF LA 577, East Carroll, LA
Built 1961 Load: 15.9 t ADT: 119
Wilison-Clinton Rd
PoorOver: COMITE RIVER
4.2 M E of LA 19, East Feliciana, LA
Built 1995 Load: 15.9 t ADT: 84
Wilison-Clinton Rd
PoorOver: DRAINAGE CREEK
3.9 M E of LA 19, East Feliciana, LA
Built 1994 Load: 15.9 t ADT: 84
FARM SUPPLY ROAD
PoorOver: CHENE BAYOU
0.5 MI N of LA1126, Jefferson Davis, LA
Built 1975 Load: 15.9 t ADT: 80
COUNTRY RD.
PoorOver: CREEK
0.5 MI N of LA102, Jefferson Davis, LA
Built 1960 Load: 15.9 t ADT: 30
W. Willow St.
PoorOver: Coulee Mine
0.36 Mi W of LA 3184, Lafayette, LA
Built 1975 Load: 15.9 t ADT: 1,960
Brasher Rd
PoorOver: CREEK
2.9 miles N of LA 503, LaSalle, LA
Built 1970 Load: 15.9 t ADT: 75
Shadow Spring Blvd
PoorOver: MILLERS CANAL
0.85 MI S OF I12 ON LA 16, Livingston, LA
Built 1978 Load: 15.9 t ADT: 500
LA0838
PoorOver: STEEP BAYOU
6.4 MI EAST OF LA 546, Ouachita, LA
Built 1955 Load: 15.9 t ADT: 8,105
ENGLISH TURN RD
PoorOver: MISSISSIPPI RIVER
0.05 MI SW OF LA 3137, Plaquemines, LA
Built 2002 Load: 15.9 t
Avenue G
PoorOver: MISSISSIPPI RIVER
.2 MILES FROM LA 23 ON AV, Plaquemines, LA
Built 2002 Load: 15.9 t
TORO CHURCH RD
PoorOver: MILL CREEK
0.7 Mi S of Plainview Rd, Sabine, LA
Built 1965 Load: 15.9 t ADT: 50
Portage Levee Rd.
PoorOver: WEST LEVEE BORROW PIT
1.37 Mi NE of LA 737, St. Landry, LA
Built 1970 Load: 15.9 t ADT: 310
Courtableau Rd
PoorOver: Courtableau Bayou
0.25 MI N of US 190, St. Landry, LA
Built 1986 Load: 15.9 t ADT: 150
LA0059
PoorOver: LONG BRANCH BAYOU
0.5 M N OF LA 36, St. Tammany, LA
Built 1954 Load: 15.9 t ADT: 4,612
Keller Rd
PoorOver: CREEK
0.3MI.N.OF 9TH STREE, St. Tammany, LA
Built 1970 Load: 15.9 t
Byers Rd
PoorOver: BEDICO CREEK
4.0M NE JCT 445 & LA 22, Tangipahoa, LA
Built 1993 Load: 15.9 t ADT: 128
Illinois Jones Rd
PoorOver: STILL BRANCH
1.5 M N JCT LA3080 &US190, Tangipahoa, LA
Built 1975 Load: 15.9 t ADT: 200
Kentwood Firestat
PoorOver: CANAL
LA38S.5TH.01 MI FIRESTATI, Tangipahoa, LA
Built 1995 Load: 15.9 t ADT: 70
LA0082
PoorOver: LONG DITCH
14.72 Mi S of La 3147, Vermilion, LA
Built 1958 Load: 15.9 t ADT: 2,899
Reese Rd
PoorOver: COULEE
0.2 Mi N La 14, Vermilion, LA
Built 1960 Load: 15.9 t ADT: 50
LA0008
PoorOver: CREEK
3.3 MI EAST OF LA 469, Vernon, LA
Built 1956 Load: 15.9 t ADT: 1,700
BLACKMON RD
PoorOver: CASTOR BAYOU
1.0 M. W. OF COOPER RD., Vernon, LA
Built 1978 Load: 15.9 t ADT: 90
CRAIGERVILLE RD
PoorOver: MAYHAW BRANCH
3.2 M. E. OF LA 117 NEAR, Vernon, LA
Built 1962 Load: 15.9 t ADT: 40
LA0159
PoorOver: CREEK
1.7 MI NORTH OF LA 615, Webster, LA
Built 1966 Load: 15.9 t ADT: 813
LA1229
PoorOver: REDLAND CREEK
.86 MI WEST OF LA 34, Winn, LA
Built 1949 Load: 15.9 t ADT: 39
Showing 11,601-11,650 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 |