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
US0171
FairOver: CYPRESS BAYOU RELIEF NO
1.4 MI. N. OF LA 3276, Caddo, LA
Built 1981 Load: 32.7 t ADT: 10,623
US0171
FairOver: CYPRESS BAYOU RELIEF NO
1.7 MI. N. OF LA 3276, Caddo, LA
Built 1981 Load: 32.7 t ADT: 10,623
LA0001
FairOver: JONES ST/KCS RR
2.6 MI NORTH OF LA 3032, Caddo, LA
Built 1983 Load: 32.7 t ADT: 16,911
I0020
FairOver: HUDSON ST
3.47 MI EAST OF I-220, Caddo, LA
Built 1965 Load: 32.7 t ADT: 98,318
I0020
FairOver: HUDSON ST
3.47 MI EAST OF I-220, Caddo, LA
Built 1965 Load: 32.7 t ADT: 98,318
I0020
FairOver: LA AVE &HOWELL ST
2.3 MI WEST OF LA 71, Caddo, LA
Built 1965 Load: 32.7 t ADT: 87,567
I0049
FairOver: CYPRESS BAYOU
4.0 MI S OF LA 526 INTR, Caddo, LA
Built 1989 Load: 32.7 t ADT: 28,142
I0049
FairOver: CYPRESS SLOUGH
3.6 M S OF LA 526 INTR, Caddo, LA
Built 1989 Load: 32.7 t ADT: 29,022
I0049
FairOver: CITY STS/KCS RR
1.9 MI NORTH OF LA 526, Caddo, LA
Built 1991 Load: 32.7 t ADT: 87,568
I0049
FairOver: CITY STS/KCS RR
0.5 MI NORTH OF LA 3132, Caddo, LA
Built 1991 Load: 32.7 t ADT: 28,142
Robson Rd
FairOver: BAYOU PEIRRE
0.6 MI SOUTH OF LA 1, Caddo, LA
Built 1989 Load: 32.7 t ADT: 300
EDGERLY DEQUINCY
FairOver: BAYOU
2.7 MI N OF US 90, Calcasieu, LA
Built 1999 Load: 32.7 t ADT: 741
I0210
FairOver: LAKE STREET
1.0 MI EAST OF LA 1138-2, Calcasieu, LA
Built 1975 Load: 32.7 t ADT: 608
I0210
FairOver: ENTERPRISE BOULEVARD
.86 MI EAST OF LA 385, Calcasieu, LA
Built 1975 Load: 32.7 t ADT: 61,445
I0210
FairOver: UPRR
.2 MI EAST OF US 90, Calcasieu, LA
Built 1977 Load: 32.7 t ADT: 608
I0010
FairOver: GUM GULLY
2.5 MI W OF LA 3063, Calcasieu, LA
Built 1966 Load: 32.7 t ADT: 86,969
I0010
FairOver: GUM GULLY
1.0 MI EAST OF LA 109, Calcasieu, LA
Built 1966 Load: 32.7 t ADT: 3,799
I0010
FairOver: BAYOU DIENDE
0.2 MI E OF LA 27, Calcasieu, LA
Built 1962 Load: 32.7 t ADT: 86,969
I0010
FairOver: BAYOU DIENDE
1.9 MI W OF LA 108, Calcasieu, LA
Built 1962 Load: 32.7 t ADT: 11,437
I0010
FairOver: VE WASHINGTON AVE
0.1 MI E of US 90B, Calcasieu, LA
Built 1961 Load: 32.7 t ADT: 3,857
I0010
FairOver: Washington St. / Fry St.
1.7 MI W of US 171, Calcasieu, LA
Built 1961 Load: 32.7 t ADT: 3,857
I0010
FairOver: KAYOUCHE COULEE
2.5 MI W OF LA 397, Calcasieu, LA
Built 1964 Load: 32.7 t ADT: 11,437
I0010
FairOver: ENGLISH BAYOU
0.8 MI EAST OF LA 397, Calcasieu, LA
Built 1964 Load: 32.7 t ADT: 68,113
I0010
FairOver: ENGLISH BAYOU
6.3 MI W OF LA 383, Calcasieu, LA
Built 1964 Load: 32.7 t ADT: 11,437
LA0378
FairOver: BAYOU
.3 MI NORTH OF LA 379, Calcasieu, LA
Built 1975 Load: 32.7 t ADT: 25,890
CHOUPIQUE RD
FairOver: WING GULLY
3.2 MI N OF LA108, Calcasieu, LA
Built 1994 Load: 32.7 t ADT: 907
MARK LEBLEU RD
FairOver: KINNER GULLY CREEK
4.46 MI. W. OF INT. 19, Calcasieu, LA
Built 1995 Load: 32.7 t ADT: 1,421
BANKENS RD
FairOver: LITTLE RIVER
2.7 MI E OF LA 27, Calcasieu, LA
Built 1995 Load: 32.7 t ADT: 1,076
FRUGE RD.
FairOver: DRAIN
0.5 MI N of LA 384, Cameron, LA
Built 1988 Load: 32.7 t ADT: 248
US0084
FairOver: WILLIAMS CREEK
.1 MI EAST OF LA 481, De Soto, LA
Built 1949 Load: 32.7 t ADT: 6,672
US0171
FairOver: WALLACE CREEK
5.2 MI. N. OR US 84, De Soto, LA
Built 1976 Load: 32.7 t ADT: 6,150
LA0346
FairOver: CREEK
5.94 MI EAST OF LA 175, De Soto, LA
Built 1962 Load: 32.7 t ADT: 275
I0049
FairOver: I-49, BAYOU NA BONCHASSE
2.64 MI N OF LA 509 INTG., De Soto, LA
Built 1986 Load: 32.7 t ADT: 29,022
I0049
FairOver: I-49, BAYOU NA BONCHASSE
2.64 MI N OF LA 509 INTG, De Soto, LA
Built 1986 Load: 32.7 t ADT: 28,142
LA0408
FairOver: COMITE RIVER
0.8 Mi E of LA 423, East Baton Rouge, LA
Built 1988 Load: 32.7 t ADT: 26,976
Bluebonnet Blvd
FairOver: BAYOU FOUNTAIN
.23 MI N . OF BURBANK DR., East Baton Rouge, LA
Built 1989 Load: 32.7 t ADT: 48,600
Bluebonnet Blvd
FairOver: SWAMP/BLUEBONNET
.6 MI N. OF BURBANK, East Baton Rouge, LA
Built 1978 Load: 32.7 t ADT: 24,300
Bluebonnet Blvd
FairOver: SWAMP/BLUEBONNET
.6 MI N OF BURBANK, East Baton Rouge, LA
Built 1978 Load: 32.7 t ADT: 24,300
I0010
FairOver: LOUISE ST ON RAMP
I0010, East Baton Rouge, LA
Built 1963 Load: 32.7 t ADT: 8,250
I0110
FairOver: CITY STREETS
0.3 M S of I-110&LA 73, East Baton Rouge, LA
Built 1963 Load: 32.7 t ADT: 1,858
I0110
FairOver: CITY STREET
I0110, East Baton Rouge, LA
Built 1963 Load: 32.7 t ADT: 8,250
LA0068
FairOver: REDWOOD CREEK TRIB
6 MILES NORTHWEST OF JACK, East Feliciana, LA
Built 2010 Load: 32.7 t ADT: 680
US0165
FairOver: OLD SLOUGH
0.63 MI. NORTH OF LA 8, Grant, LA
Built 2007 Load: 32.7 t ADT: 7,084
US0165
FairOver: BIG CREEK
0.76 MI. NORTH OF LA 8, Grant, LA
Built 2007 Load: 32.7 t ADT: 7,084
LA0155
FairOver: CYPRESS BAYOU RELIEF
0.3 MILES EAST OF US 167, Jackson, LA
Built 1976 Load: 32.7 t ADT: 1,605
I0010
FairOver: CANAL NO. 3
6.7 MI EAST OF LA 49, Jefferson, LA
Built 1966 Load: 32.7 t ADT: 21,290
Lapalco BLVD
FairOver: MURPHY CANAL
0.9MI.W.OF MANHATTAN, Jefferson, LA
Built 1976 Load: 32.7 t ADT: 20,000
US0090
FairOver: US 90, BNSFRR
4.3 MI EAST OF LA 395, Jefferson Davis, LA
Built 2002 Load: 32.7 t ADT: 4,262
E. Edith Rd.
FairOver: EDITH COULEE
0.50 Mi W of LA 733, Lafayette, LA
Built 1986 Load: 32.7 t ADT: 400
S. A RD.
FairOver: COULEE
0.6 miles South of US 90, Lafayette, LA
Built 1977 Load: 32.7 t ADT: 66
Showing 4,351-4,400 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 |