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
Hinds Rd
Structurally DeficientOver: WALLACE BAYOU
2.3 MI. E. OF LA. 17, De Soto, LA
Built 1966 ADT: 55
LA0410
Structurally DeficientOver: BLACKWATER BAYOU
1.6 M N of LA 408&LA 410, East Baton Rouge, LA
Built 1957 ADT: 3,664
BULLRUN RD
Structurally DeficientOver: BRIDGE CREEK
.6 MILES SOUTH LA 88, East Carroll, LA
Built 1975 ADT: 190
SCHROCK RD
Structurally DeficientOver: BUSHY BAYOU
1.8 M. E OF BAYOU MA, East Carroll, LA
Built 1960 ADT: 130
LENSING LANE
Structurally DeficientOver: BAYOU PROVIDENCE
.2 MI. SO. INT. 043, East Carroll, LA
Built 1960
Midway Rd
Structurally DeficientOver: BLACK CREEK
0.4 M E of LA 955, East Feliciana, LA
Built 1965 ADT: 130
Singletary St
Structurally DeficientOver: REDWOOD CREEK
270 Ft W of LA 19, East Feliciana, LA
Built 1999 ADT: 118
Bennett Rd
Structurally DeficientOver: HURRICANE CREEK
3.9 M W of LA 19, East Feliciana, LA
Built 1999 ADT: 12
Par Rd 4-106
Structurally DeficientOver: UNNAMED CREEK
0.80 MI E OF LA19, East Feliciana, LA
Built 1989 ADT: 40
Beiber Rd
Structurally DeficientOver: NEZPIQUE BAYOU
3.65 Mi W of La 1160, Evangeline, LA
Built 1965 ADT: 70
LA0075
Structurally DeficientOver: BAYOU BREAUX
1.1 Mi N of La 141, Iberville, LA
Built 1973 ADT: 2,943
Avenue E
Structurally DeficientOver: DRESSER CANAL
0.10 MI WEST OF LA 1, Lafourche, LA
Built 1952
VALENTINE BRIDGE R
Structurally DeficientOver: LAFOURCHE BAYOU
0.01 MI N OF LA 1, Lafourche, LA
Built 1969
MONDY RD
Structurally DeficientOver: MADDEN CREEK
3 MI S SIMMSBORO, Lincoln, LA
Built 1977 ADT: 155
MITCHELL RD
Structurally DeficientOver: LITTLE CREEK
3 MI N SIMSBORO, Lincoln, LA
Built 1978 ADT: 77
Lod Stafford Rd
Structurally DeficientOver: COLYELL CREEK
3.06 MI EAST OF 1024, Livingston, LA
Built 1986 ADT: 300
W BEAR LAKE RD
Structurally DeficientOver: TENSAS RIVER
9 MI W TALLA BENA, Madison, LA
Built 1950 ADT: 187
LAKE IRWIN RD
Structurally DeficientOver: IRWIN LAKE
3.2 MI. NE INT. 505, Morehouse, LA
Built 1978 ADT: 150
EVERGLADES RD
Structurally DeficientOver: DRAIN TO LITTLE BYU BOEU
.6 MI. E. HWY. 139, Morehouse, LA
Built 1972 ADT: 150
JOHN CRYMES RD
Structurally DeficientOver: PATTEN SLOUGH
1.3 MI EAST INT. 474, Morehouse, LA
Built 1985 ADT: 80
OLEN HUGHES
Structurally DeficientOver: BAYOU BONNEIDEE
0.8 MI SE of US 165, Morehouse, LA
Built 1991 ADT: 20
DUMMIE LINE RD
Structurally DeficientOver: SHACKLEFORD BAYOU
4.7 MI. E. INT. 192, Morehouse, LA
Built 1960 ADT: 60
Almonaster Ave
Structurally DeficientOver: INNER HARBOR NAVIGATION
0.01 MI E OF FRANCE RD, Orleans, LA
Built 1919
PINE BLUFF RD
Structurally DeficientOver: DRAIN TO CYPRESS CREEK
2.4 MI. S. HWY. 557, Ouachita, LA
Built 1978 ADT: 360
HARMON JOHNSON RD
Structurally DeficientOver: DRAIN TO PRAIRIE BAYOU
2.2 MI. E. U.S. HWY., Ouachita, LA
Built 1968 ADT: 570
SHORT WASHNGTON ST
Structurally DeficientOver: E. PRONG YOUNGS BAYOU
SHORT WASHINGTON ST., Ouachita, LA
Built 1972 ADT: 200
FLYNN ST
Structurally DeficientOver: ROOTS CANAL
FLYNN ST. IN MONROE, Ouachita, LA
Built 1985 ADT: 250
KIROLI RD
Structurally DeficientOver: N TUPAWEK CREEK
2.0 MILES NW W.MONROE, Ouachita, LA
Built 1980 ADT: 300
LA0413
Structurally DeficientOver: BAYOU DISCHARGE
2.1 Mi W of La 413, Pointe Coupee, LA
Built 1968 ADT: 5,896
LA0155
Structurally DeficientOver: CONEY BAYOU
2.30 MI EAST OF US 71, Red River, LA
Built 1972 ADT: 1,130
LA0155
Structurally DeficientOver: GRAND BAYOU
2.40 MI EAST OF US 71, Red River, LA
Built 1972 ADT: 1,130
Minden Rd
Structurally DeficientOver: PH RD 230,STANLEY CR.
0.7 MI. EAST OF LA 5, Red River, LA
Built 1975 ADT: 72
LA0132
Structurally DeficientOver: BOEUF RIVER
.07 MI NORTH OF US 561, Richland, LA
Built 1966 ADT: 1,913
JONES LANE
Structurally DeficientOver: CREEK
LOGMI 0.30 FR 4 TO 8, Richland, LA
Built 1969 ADT: 40
BEE BAYOU RD
Structurally DeficientOver: CREEK
LOGMI 2.40 FR 212 TO, Richland, LA
Built 1965 ADT: 210
COOK RD
Structurally DeficientOver: ASH SLOUGH
LOGMI 2.70 FR 271 TO, Richland, LA
Built 1984 ADT: 70
MCMANUS RD
Structurally DeficientOver: CYPRESS CREEK
LOGMI 5.43 FR 432 TO, Richland, LA
Built 1966 ADT: 150
DAIRY RD
Structurally DeficientOver: CREEK
LOGMI 0.70 FR 172 TO, Richland, LA
Built 1965 ADT: 60
COMEAUX RD
Structurally DeficientOver: CREEK
LOGMI 3.41 FR 487 TO, Richland, LA
Built 1960 ADT: 30
ADCOX RD
Structurally DeficientOver: CREEK
LOGMI 0.96 FR 452 TO, Richland, LA
Built 1970 ADT: 40
JAGGERS LANE
Structurally DeficientOver: BOGGY BAYOU
LOGMI 4.61 FR 455 TO, Richland, LA
Built 1955 ADT: 30
FORTENBERRY RD
Structurally DeficientOver: BOGGY BAYOU
LOGMI 2.96 FR 443 TO, Richland, LA
Built 1960 ADT: 22
MIDWAY CHURCH RD
Structurally DeficientOver: CREEK
LOGMI 1.44 FR 391 TO, Richland, LA
Built 1960 ADT: 90
LA0020
Structurally DeficientOver: BAYOU CHEVREVIL
1.2 Mi N of LA 307, St. James, LA
Built 1959 ADT: 8,204
Conway Bayou
Structurally DeficientOver: BARROW PIT
26 Ft E of US 61, St. James, LA
Built 1968 ADT: 163
Bellard Loop
Structurally DeficientOver: Drainage Ditch
0.4 Mi. E. of La 35, St. Landry, LA
Built 1955 ADT: 100
Ducharme Rd.
Structurally DeficientOver: DRAINAGE BAYOU
0.31 Mi SW of I-49, St. Landry, LA
Built 1974 ADT: 2,000
Hosmer Mill Rd
Structurally DeficientOver: BR. OV BOGUE FALAYA RIVE
2 MI NE OF LA 437, St. Tammany, LA
Built 1980 ADT: 839
Million Dollar Rd
Structurally DeficientOver: BOGUE FALAYA RIVER
0.10 MI EAST OF LA 25, St. Tammany, LA
Built 1960 ADT: 1,768
LA0151
Structurally DeficientOver: CREEK
0.1 MI WEST OF LA 33, Union, LA
Built 1961 ADT: 527
Showing 12,201-12,250 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 |