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
US0071
GoodOver: BORROW PIT CANAL
2.55 I. N. OF LA 1 ON US, Caddo, LA
Built 2015 Load: 32.4 t ADT: 786
WOOLWORTH RD
GoodOver: BOGGY BAYOU TRIBUTARY
1.6 MI. N. OF LA 525, Caddo, LA
Built 2017 Load: 32.4 t ADT: 3,700
LA3049
GoodOver: IRISH BAYOU
0.8 MI S OF LA 173, Caddo, LA
Built 2020 Load: 32.4 t ADT: 399
US0080
GoodOver: CREEK
0.4 MI E. OF TX LINE, Caddo, LA
Built 1936 Load: 32.4 t ADT: 3,924
US0071
GoodOver: HORSE SHOE BAYOU
3.0 MI NORTH OF LA 169, Caddo, LA
Built 1955 Load: 32.4 t ADT: 472
US0071
GoodOver: DRAIN
7.8 MI NORTH OF LA 2, Caddo, LA
Built 1935 Load: 32.4 t ADT: 349
LA0001
GoodOver: LA 1, CREEK
5.0 MI NORTH OF LA 170, Caddo, LA
Built 1986 Load: 32.4 t ADT: 2,032
LA0001
GoodOver: TYSON BRANCH
0.3 MI NORTH OF LA 168, Caddo, LA
Built 1986 Load: 32.4 t ADT: 650
LA0530
GoodOver: DOOLEY BAYOU
7.41 MI WEST OF LA 1, Caddo, LA
Built 1980 Load: 32.4 t ADT: 177
LA0530
GoodOver: HORSESHOE BAYOU
0.45 MI EAST OF US 71, Caddo, LA
Built 2002 Load: 32.4 t ADT: 177
LA0511
GoodOver: CREEK
0.3 MI EAST LA 3132, Caddo, LA
Built 1984 Load: 32.4 t ADT: 21,080
LA0511
GoodOver: CREEK
3.0 MI EAST OF LA 3132, Caddo, LA
Built 1963 Load: 32.4 t ADT: 21,080
LA0511
GoodOver: BRUSH BAYOU
4.0 MI EAST OF LA 3132, Caddo, LA
Built 1963 Load: 32.4 t ADT: 21,080
LA3132
GoodOver: DRAIN
1.2 MI. E. OF I-20, Caddo, LA
Built 1984 Load: 32.4 t ADT: 12,192
I0020
GoodOver: DRAIN
1.5 MI EAST OF I-220, Caddo, LA
Built 1965 Load: 32.4 t ADT: 98,318
Adams Rd
GoodOver: JOHNSON BRANCH
0.2 MI N. OF CADDO RD 13, Caddo, LA
Built 2006 Load: 32.4 t ADT: 42
BUNCOMBE RD
GoodOver: TRIB. TO GILMER BAYOU
1.4 MI NE CADDO RD NO 7, Caddo, LA
Built 1999 Load: 32.4 t ADT: 6,138
Moore Rd
GoodOver: TRIB BRUSH BAYOU
0.003 MI S OF IDEMA ST, Caddo, LA
Built 1988 Load: 32.4 t ADT: 22
LINWOOD AVE
GoodOver: LINWOOD AVE,TRBY TO BRUS
0.2 MI. N. OF LA 3132, Caddo, LA
Built 1983 Load: 32.4 t ADT: 14,042
Kimberly Rd
GoodOver: TRIB. TO BOGGY BAYOU
0.7 MI. SO. OF LA 511, Caddo, LA
Built 2005 Load: 32.4 t ADT: 2,400
BUNCOMBE RD
GoodOver: GILMER BAYOU
1.0 MI SW OF LA 511, Caddo, LA
Built 1991 Load: 32.4 t ADT: 2,656
PINES RD
GoodOver: BICKHAM BAYOU
0.7 MI N OF US 80, Caddo, LA
Built 1987 Load: 32.4 t ADT: 4,200
FERN BAYOU
GoodOver: BAYOU PIERRE
0.9 MI N OF PIERREMONT AV, Caddo, LA
Built 1988 Load: 32.4 t ADT: 5,938
Jefferson Paige Rd
GoodOver: TRIBUTARY TO CROSS LAKE
0.9 MI. WEST OF US 80, Caddo, LA
Built 2002 Load: 32.4 t ADT: 21
E. ELMWOOD RD
GoodOver: BAYOU PIERRE TRIB
0.1 MI W OF ALEXANDER AVE, Caddo, LA
Built 1988 Load: 32.4 t ADT: 1,381
RUTHERFORD STREET
GoodOver: GILBERT DITCH
2.5 MI W OF HWY 1, Caddo, LA
Built 1998 Load: 32.4 t
LAKESHORE DR
GoodOver: TRIBUTARY TO CROSS LAKE
2.9 MI W OF US 80, Caddo, LA
Built 2004 Load: 32.4 t ADT: 1,100
LAKESHORE DR
GoodOver: TRIBUTARY TO CROSS LAKE
2.6 MI W OF US 80, Caddo, LA
Built 2004 Load: 32.4 t ADT: 1,100
MILTON ST
GoodOver: TRIBUTARY TO CROSS LAKE
0.8 MI W OF LA171, Caddo, LA
Built 1951 Load: 32.4 t ADT: 150
WILLIE MAYS STREET
GoodOver: MARTIN L KING DRIVE DITC
0.43 MI WEST OF LEGARDY S, Caddo, LA
Built 1996 Load: 32.4 t ADT: 852
Gamm Rd Ext
GoodOver: MYRICKS BAYOU
0.75 MI N. OF LA 169, Caddo, LA
Built 1997 Load: 32.4 t ADT: 36
Self Rd
GoodOver: SWIFT BAYOU
3.11 MI WEST OF US 71, Caddo, LA
Built 1997 Load: 32.4 t ADT: 36
Self Rd
GoodOver: HORSESHOE BAYOU
0.75 MI W. OF US 71, Caddo, LA
Built 1998 Load: 32.4 t ADT: 33
LA0384
GoodOver: BLACK BAYOU CANAL
8.2 MI NW OF LA 385, Calcasieu, LA
Built 2006 Load: 32.4 t ADT: 988
LA0385
GoodOver: COULEE
1.8 M N of I-210, Calcasieu, LA
Built 2011 Load: 32.4 t ADT: 16,472
ARTHUR IRWIN RD
GoodOver: BUXTON CR
0.17 MI W OF LA 27, Calcasieu, LA
Built 2017 Load: 32.4 t ADT: 2,157
CORBINA ROAD
GoodOver: KAYOUCHE COULEE
0.3 MI N OF LA 14, Calcasieu, LA
Built 2011 Load: 32.4 t ADT: 1,510
CORBINA ROAD
GoodOver: CALCASIEU RIVER
1.3 MI N LA 14, Calcasieu, LA
Built 2011 Load: 32.4 t ADT: 1,510
US0090
GoodOver: CANAL
6.7 MI EAST OF LA 388, Calcasieu, LA
Built 1968 Load: 32.4 t ADT: 13,695
LA0027
GoodOver: DRAIN
0.1 MI N of LA 397, Calcasieu, LA
Built 1957 Load: 32.4 t ADT: 1,482
LA0014
GoodOver: DRAIN
1.3 MI N OF I-210, Calcasieu, LA
Built 1962 Load: 32.4 t ADT: 8,679
LA0014
GoodOver: CANAL
4.5 MI EAST OF LA 27, Calcasieu, LA
Built 1959 Load: 32.4 t ADT: 2,023
I0010
GoodOver: DRAIN
2.3 MI EAST OF LA 108, Calcasieu, LA
Built 1966 Load: 32.4 t ADT: 86,969
I0010
GoodOver: DRAIN
9.3 MI W OF LA 1256, Calcasieu, LA
Built 1966 Load: 32.4 t ADT: 3,799
I0010
GoodOver: DRAIN
3.5 MI EAST OF LA 397, Calcasieu, LA
Built 1964 Load: 32.4 t ADT: 68,113
LA0108
GoodOver: DRAIN
.06 MI EAST OF LA 1256, Calcasieu, LA
Built 1980 Load: 32.4 t ADT: 9,372
LA0557
GoodOver: LITTLE CYPRESS CREEK
3.6 MILES NORTH OF HWY 4, Caldwell, LA
Built 2015 Load: 32.4 t ADT: 1,073
Childress Rd
GoodOver: BEAUCOUP CREEK
2.2M E of LA 506, Caldwell, LA
Built 2010 Load: 32.4 t ADT: 100
LA0126
GoodOver: CREEK
.25 MI WEST OF US 165, Caldwell, LA
Built 1971 Load: 32.4 t ADT: 1,092
LA0557
GoodOver: CREEK
1.16 MI NORTH OF LA 4, Caldwell, LA
Built 1930 Load: 32.4 t ADT: 296
Showing 7,951-8,000 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 |