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
Valentine Lake Rd
GoodOver: VALENTINE CREEK
2.55 MI. EAST OF LA 121, Rapides, LA
Built 2013 Load: 44.4 t ADT: 520
BAYOU DUPONT
GoodOver: MARTHAVILLE RD
1.56 MI N OF LA 1217, Sabine, LA
Built 2017 Load: 44.4 t ADT: 200
Shuteye Road
GoodOver: Creek
2.54 Mi W of LA 6, Sabine, LA
Built 2016 Load: 44.4 t ADT: 230
Leonard Chapel Rd
GoodOver: Branch
1.88 Mi S of LA16, St. Helena, LA
Built 2019 Load: 44.4 t ADT: 500
Pumping Station Rd
GoodOver: Branch
1.55 Mi. S. of LA 10, St. Helena, LA
Built 2020 Load: 44.4 t ADT: 500
Sandy Run Rd
GoodOver: Sandy Run Trib.
0.5 Mi. W. of LA 1043, St. Helena, LA
Built 2020 Load: 44.4 t ADT: 450
Andrepont Rd
GoodOver: West Fork Bayou
0.2 Mi. N. of US 190, St. Landry, LA
Built 2017 Load: 44.4 t ADT: 1,250
Jessie B Rd
GoodOver: Mallet Bayou
0.23 MI N of LA 752, St. Landry, LA
Built 2023 Load: 44.4 t ADT: 150
Lion Castille Rd
GoodOver: BAYOU PORTAGE GUIDRY
1.07 Mi SE of I-10, St. Martin, LA
Built 2014 Load: 44.4 t ADT: 11
Banker Rd
GoodOver: COULEE
1.3 Mi. W. of LA 679, St. Martin, LA
Built 1993 Load: 44.4 t ADT: 252
Leed Champagne Rd
GoodOver: CYPRESS ISLAND COULEE
0.5 Mi N Russo Milizzo Rd, St. Martin, LA
Built 2003 Load: 44.4 t ADT: 1,274
Hope Rd
GoodOver: PORTAGE BAYOU
1.1 Mi. E of Jim Sells Rd, St. Martin, LA
Built 1985 Load: 44.4 t ADT: 50
LA0040
GoodOver: DRAIN
0.2 M W OF LA 1077, St. Tammany, LA
Built 1954 Load: 44.4 t ADT: 2,778
Wadesboro Rd
GoodOver: Creek
Creek, Tangipahoa, LA
Built 2023 Load: 44.4 t ADT: 1,350
JERUSALEM CHUR. RD
GoodOver: CREEK
.65 MI. E. OF LA 1249, Tangipahoa, LA
Built 2018 Load: 44.4 t ADT: 757
Randall Rd
GoodOver: Yellow Water River
0.8 Mi. Mi. N. of LA 3234, Tangipahoa, LA
Built 2020 Load: 44.4 t ADT: 2,400
N. Kibbe St
GoodOver: LAPORTS COULEE
0.16 Mi S of La 14, Vermilion, LA
Built 2010 Load: 44.4 t ADT: 1,233
S. AIRPORT R.
GoodOver: YOUNGS SOUTH COULEE
0.5 Mi S of La 3267, Vermilion, LA
Built 2016 Load: 44.4 t ADT: 700
PRESTON RD
GoodOver: MARRONE CANAL
1.5 MI W OF LA 35, Vermilion, LA
Built 2015 Load: 44.4 t ADT: 80
LA0121
GoodOver: MILL CREEK
0.2 MILES WEST OF LA 489, Vernon, LA
Built 2015 Load: 44.4 t ADT: 1,932
LA0121
GoodOver: NORTH MILL CREEK
1.4 MILES WEST OF LA 489, Vernon, LA
Built 2015 Load: 44.4 t ADT: 1,932
LA0126
GoodOver: CASTOR CREEK
2.88 M W of LA 3239, Caldwell, LA
Built 1985 Load: 44.5 t ADT: 611
LA0015
GoodOver: CREEK
2.5 MI NORTH OF LA 8, Catahoula, LA
Built 2002 Load: 44.5 t ADT: 4,592
LA0115
GoodOver: CREEK
2.5 MI NORTH OF LA 8, Catahoula, LA
Built 2002 Load: 44.5 t ADT: 4,987
SIEGEN LN OFF RAMP
GoodOver: WARDS CREEK, RR
0.5 Mi E. of LA 42, East Baton Rouge, LA
Built 1994 Load: 44.5 t ADT: 2,360
US0071
GoodOver: NANTACHIE CREEK
0.25 MI NE JCT LA 1240, Grant, LA
Built 1983 Load: 44.5 t ADT: 1,388
LA0122
GoodOver: SWAFFORD CREEK
11.21 M E OF E JCT LA 471, Grant, LA
Built 1999 Load: 44.5 t ADT: 683
I0049
GoodOver: Pont Des Mouton
1.58 Mi S of LA 98, Lafayette, LA
Built 1981 Load: 44.5 t ADT: 11,728
I0012
GoodOver: WEST COLYELL CR
I0012, Livingston, LA
Built 1970 Load: 44.5 t ADT: 37,161
I0012
GoodOver: DUMPLIN CREEK
I0012, Livingston, LA
Built 1970 Load: 44.5 t ADT: 37,161
I0012
GoodOver: MIDDLE COLYELL CREEK
I0012, Livingston, LA
Built 1970 Load: 44.5 t ADT: 37,161
I0012
GoodOver: HORNSBY CREEK
I0012, Livingston, LA
Built 1969 Load: 44.5 t ADT: 37,161
I0012
GoodOver: BIG BRANCH
I0012, Livingston, LA
Built 1969 Load: 44.5 t ADT: 44,252
I0012
GoodOver: BLOOD RIVER
I0012, Livingston, LA
Built 1968 Load: 44.5 t ADT: 44,252
I0610
GoodOver: ON RAMP FROM I 610 E
.5 MI EAST OF I-10, Orleans, LA
Built 1963 Load: 44.5 t ADT: 7,620
I0610
GoodOver: OFF RP TO FRANKLIN AVE
.9 MI EAST OF LA 3071, Orleans, LA
Built 1968 Load: 44.5 t ADT: 7,620
I0010
GoodOver: OFFRAMP-ELY. FDS.
.68 MI EAST OF LA 39, Orleans, LA
Built 1974 Load: 44.5 t ADT: 3,652
I0010
GoodOver: CROWDER RD.
2.2 MI EAST OF US 90, Orleans, LA
Built 1973 Load: 44.5 t ADT: 1,600
I0010
GoodOver: BULLARD RD.
4.4 MI EAST OF US 90, Orleans, LA
Built 1973 Load: 44.5 t ADT: 1,600
I0020
GoodOver: I20;RAMP 3
.8 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 44.5 t ADT: 15,642
LA0115
GoodOver: WATERS BAYOU
2.26 MI. SOUTH OF LA 28, Rapides, LA
Built 2001 Load: 44.5 t ADT: 2,775
I0049
GoodOver: HILL BAYOU
3.11 MI. NORTH OF LA 3250, Rapides, LA
Built 1995 Load: 44.5 t ADT: 33,869
I0049
GoodOver: GROUND
NORTH I-49 / US 71 INTG., Rapides, LA
Built 1994 Load: 44.5 t ADT: 15,642
LA0191
GoodOver: SALTER CREEK
4.6 MI NORTH OF LA 476, Sabine, LA
Built 1979 Load: 44.5 t ADT: 1,566
US0190
GoodOver: LATANIS BAYOU
0.72 Mi W of LA 105, St. Landry, LA
Built 1972 Load: 44.5 t ADT: 13,648
US0071
GoodOver: BRUSHY BAYOU
1.3 MI NORTH OF US 190, St. Landry, LA
Built 2002 Load: 44.5 t ADT: 1,918
US0071
GoodOver: STATE CANAL
1.7 MI NORTH OF US 190, St. Landry, LA
Built 2003 Load: 44.5 t ADT: 1,918
US0071
GoodOver: SLOW BAYOU
6.06 MI NORTH OF US 190, St. Landry, LA
Built 2004 Load: 44.5 t ADT: 1,695
US0190
GoodOver: TANGIPAHOA RIVER
1.12 MI. WEST OF LA 445, Tangipahoa, LA
Built 1969 Load: 44.5 t ADT: 9,053
I0012
GoodOver: YELLOW WATER RIVER REL.
I0012, Tangipahoa, LA
Built 1970 Load: 44.5 t ADT: 58,377
Showing 10,601-10,650 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 |