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
BRANDON RD
GoodOver: HURRICANE CREEK
APPROX. 4 M. SE OF LA 475, Sabine, LA
Built 1993 Load: 21.7 t ADT: 60
W HEATHER DR
GoodOver: COUSIN'S CANAL
0.3 MI SOUTH OF US 90, St. Charles, LA
Built 1988 Load: 21.7 t
BIRCH ST
GoodOver: COUSIN'S CANAL
0.7 MI SOUTH OF US 90, St. Charles, LA
Built 1988 Load: 21.7 t
US0051
GoodOver: DRAIN
0.1 M N OF LA 440, Tangipahoa, LA
Built 1956 Load: 21.7 t ADT: 2,266
LA0330
GoodOver: Boston Canal
0.4 Mi W of LA 331, Vermilion, LA
Built 1959 Load: 21.7 t ADT: 1,923
LA0111
GoodOver: DRAIN
1.6 MI. EAST OF LA 392, Vernon, LA
Built 1995 Load: 21.7 t ADT: 937
Old Columbia Rd
GoodOver: BROWN BRANCH
0.3 M N OF LA 38, Washington, LA
Built 1989 Load: 21.7 t ADT: 137
S Harrells Ferry
GoodOver: JONES CREEK
2.0 M W OF LA 3245, East Baton Rouge, LA
Built 2012 Load: 21.8 t ADT: 8,330
S Harrells Ferry
GoodOver: JONES CREEK
3.0 M W OF LA 3245, East Baton Rouge, LA
Built 2012 Load: 21.8 t ADT: 8,330
LA0442
GoodOver: TRAYLOR BRANCH
0.1 M E OF LA 43, Livingston, LA
Built 1962 Load: 21.8 t ADT: 5,026
LA0487
GoodOver: MAYOUS BAYOU
.32 MI. N OF LA120, Natchitoches, LA
Built 1958 Load: 21.8 t ADT: 570
LA0620
GoodOver: TIGER BAYOU
3.2 M W of LA 415, West Baton Rouge, LA
Built 1958 Load: 21.8 t ADT: 2,107
Cr-714
GoodOver: THOMPSON CREEK (WEST BR)
1.9 M NE of US 61, West Feliciana, LA
Built 1984 Load: 21.8 t ADT: 65
LA1016-1
GoodOver: BAYOU VERRET
2 Mi E of LA 70, Assumption, LA
Built 2010 Load: 22.0 t ADT: 192
Arkansas St
GoodOver: Arkansas St
0.18 MI S OF JCT LA 2, Bossier, LA
Built 2019 Load: 22.0 t ADT: 100
White Springs Rd
GoodOver: WALLACE BAYOU
0.5 SW OF CADDO RD 26 (EL, Caddo, LA
Built 2010 Load: 22.0 t ADT: 200
LA0008
GoodOver: CREEK
.7 MI EAST OF LA 913, Catahoula, LA
Built 1975 Load: 22.0 t ADT: 1,394
Central Throughway
GoodOver: BEAVER BAYOU
0.2 MI. S. OF LA37, East Baton Rouge, LA
Built 2011 Load: 22.0 t ADT: 10,400
LA0013
GoodOver: DRAIN
.7 MI NORTH OF LA 167, Evangeline, LA
Built 1970 Load: 22.0 t ADT: 1,228
US0090-B
GoodOver: DRAIN CANAL
6.1 MILES WEST OF MISSISS, Jefferson, LA
Built 1983 Load: 22.0 t ADT: 67,143
David Dr
GoodOver: CANAL NO. 4
.8 MILES NORTH OF WEST ME, Jefferson, LA
Built 2004 Load: 22.0 t
Choctaw Rd
GoodOver: ST JAMES CANAL
04.69 MI FROM INT. 191, Lafourche, LA
Built 1997 Load: 22.0 t ADT: 961
McLIN Rd
GoodOver: COLYELL CREEK BRIDGE
5 SO OF 190 @ SATSUMA RD, Livingston, LA
Built 1996 Load: 22.0 t ADT: 500
SALCEDO ST
GoodOver: WASHINGTON AVENUE CANAL
0.0 MI E OF WASHINGTON AV, Orleans, LA
Built 1984 Load: 22.0 t
ADAMS ST
GoodOver: WEST PRONG YOUNGS BAYOU
0.9 MI NW of I-20, Ouachita, LA
Built 1999 Load: 22.0 t ADT: 300
Newsome Rd
GoodOver: WIGGINS BAYOU
0.41 MI WEST LA 107, Rapides, LA
Built 1999 Load: 22.0 t ADT: 145
Plaisance St.
GoodOver: Bayou Tesson
0.2 Mi S of W MLK Dr., St. Landry, LA
Built 1965 Load: 22.0 t ADT: 500
Reed ave.
GoodOver: CANAL
0.6 M.S.OF US 190 &HWY 51, Tangipahoa, LA
Built 2002 Load: 22.0 t ADT: 883
LA0095
GoodOver: Bayou Queue De Tortue
.68 MI. NORTH OF I-10, Acadia, LA
Built 1998 Load: 22.4 t ADT: 5,938
LA3067
GoodOver: CREEK
1.47 MI WEST OF LA 91, Acadia, LA
Built 1964 Load: 22.4 t ADT: 448
Spring Prairie Rd.
GoodOver: WEST FORK BAYOU
0.34 Mi W of La 10, Evangeline, LA
Built 1987 Load: 22.4 t ADT: 46
Ridge Rd
GoodOver: BAYOU DANIALS
4 MI. SW OF WHITE CASTLE, Iberville, LA
Built 1998 Load: 22.4 t ADT: 120
Transcontinental D
GoodOver: DRAIN CANAL NO. 4
0.8 MI S. OF VETERANS HWY, Jefferson, LA
Built 1995 Load: 22.4 t ADT: 20,800
W. Napolean Ave
GoodOver: CANAL NO. 4
0.05 W OF KENT AVENUE, Jefferson, LA
Built 1995 Load: 22.4 t ADT: 20,800
W. Napolean Ave
GoodOver: CANAL #4
0.7 MI. E. OF DAVID DRIVE, Jefferson, LA
Built 2000 Load: 22.4 t
Ellis Lee Rd
GoodOver: MILE BRANCH
1.7 MI N LA 10&16TH FRANK, Washington, LA
Built 2000 Load: 22.4 t ADT: 392
LA0095
GoodOver: DRAIN
1.55 MI NORTH OF LA 35, Acadia, LA
Built 1939 Load: 22.7 t ADT: 1,664
US0061
GoodOver: CONWAY CANAL
US0061, Ascension, LA
Built 1954 Load: 22.7 t ADT: 8,171
US0061
GoodOver: AIRLINE DRAINAGE
3.2 M SE of US 61&LA 22, Ascension, LA
Built 1954 Load: 22.7 t ADT: 8,171
US0061
GoodOver: AIRLINE DRAINAGE
1.7 M SE of US 61&LA 22, Ascension, LA
Built 1954 Load: 22.7 t ADT: 8,171
US0061
GoodOver: CANAL
1 M SE of US 61&LA 22, Ascension, LA
Built 1954 Load: 22.7 t ADT: 8,171
E Douglas St
GoodOver: DRAINAGE BAYOU
.10 MILES SOUTH LA 3038, Ascension, LA
Built 1995 Load: 22.7 t ADT: 20
LA0070
GoodOver: BAYOU CORNE
LA0070, Assumption, LA
Built 1960 Load: 22.7 t ADT: 6,842
LA0070
GoodOver: BAYOU VALERIE
2.5 M W of LA 69&LA 70, Assumption, LA
Built 1960 Load: 22.7 t ADT: 6,842
LA0362
GoodOver: COCO CANAL
1.05 MILES EAST OF LA 361, Avoyelles, LA
Built 1960 Load: 22.7 t ADT: 759
LA0027
GoodOver: CREEK
5.0 MI N of LA 110, Beauregard, LA
Built 1955 Load: 22.7 t ADT: 3,333
KELLI ROAD
GoodOver: FLAT RIVER
0.8 MI SE OF LA 157, Bossier, LA
Built 2020 Load: 22.7 t ADT: 10
WOOLWORTH RD
GoodOver: TRIB TO GILMER BAYOU
0.2 MI. S. OF LA 526, Caddo, LA
Built 2016 Load: 22.7 t ADT: 4,482
WEST 72nd
GoodOver: 71ST STREET DITCH
0.03 MI E OF LINWOOD AVE, Caddo, LA
Built 1987 Load: 22.7 t ADT: 152
Gregory Rd
GoodOver: LOST Cr
1M E of La 4, Caldwell, LA
Built 1996 Load: 22.7 t ADT: 70
Showing 6,951-7,000 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 |