Total bridges
463
Public highway bridges in Calcasieu County
County profile · official public datasets
Calcasieu County, LA
463 public highway bridges tracked in the FHWA National Bridge Inventory: 19% rated Good, 73% Fair, 8% Poor.
- 463
- Public bridges
- 19%
- Good condition
- 8%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Calcasieu County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 33%
- lowest Poor share in state
- 8%
- Poor-condition share
- 463
- public highway bridges
- 1983
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Calcasieu County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Calcasieu County ranks #21 of 64 Louisiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8%). Calcasieu County, Louisiana contains 463 public highway bridges. Roughly 19% are rated “Good,” 73% “Fair,” and 8% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
19%
88 of 463 rated 7-9
Fair condition
73%
338 of 463 rated 5-6
Poor condition
8%
37 of 463 rated 4 or below
In-state Poor-share rank
#21 of 64
Among Louisiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 463 NBI-tracked bridges by lowest applicable component rating.
Good 19% (88)
Fair 73% (338)
Poor 8% (37)
Calcasieu County's Poor-condition bridges carry 328,426 vehicle crossings a day
That is 6% of the county's reported daily bridge traffic on 7.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 9,384 crossings a day against 6,506 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 461 of 463 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
40.4% of Calcasieu County's bridges have passed the 50-year mark
187 of the 463 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 19% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 26.5% of the county's Poor-condition bridge traffic
I0010 over SABINE RELIEF, built 1954, carries 86,969 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 37-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 328,426 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Calcasieu County's bridges were built
463 bridges with a recorded construction year, grouped by decade
- 1920s 4
1920–1929
4 bridges
- 1930s 6
1930–1939
6 bridges
- 1940s 2
1940–1949
2 bridges
- 1950s 46
1950–1959
46 bridges
- 1960s
1960–1969
120 bridges
- 1970s
1970–1979
55 bridges
- 1980s 43
1980–1989
43 bridges
- 1990s
1990–1999
69 bridges
- 2000s 35
2000–2009
35 bridges
- 2010s
2010–2019
56 bridges
- 2020s 27
2020–2029
27 bridges
What this shows Construction peaked in the 1960s, when 120 of the county's bridges still in the inventory were built, which is 25.9% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1983) matches the Louisiana average (1982).
How Calcasieu County compares with Louisiana's closest counties by inventory size
The 5 Louisiana counties nearest Calcasieu County in number of bridges, with their condition splits. Its 8% Poor share is the 3rd-lowest of these 6. Its average build year of 1983 against a peer-group mean of 1981 is in line with the group.
Showing the 5 closest of 63 Louisiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| East Baton Rouge County | 548 | 41.8% | 38.5% | 19.7% | 1980 |
| Rapides County | 523 | 53.3% | 39.6% | 7.1% | 1987 |
| Tangipahoa County | 477 | 40.7% | 45.9% | 13.4% | 1977 |
| Calcasieu County (this page) | 463 | 19% | 73% | 8% | 1983 |
| Orleans County | 382 | 43.7% | 46.3% | 9.9% | 1976 |
| Jefferson County | 379 | 58.6% | 36.9% | 4.5% | 1984 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Calcasieu County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Calcasieu County, both outside Louisiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside LA (463 bridges here).
- Darke County, OH · 463 bridges
- Anderson County, SC · 463 bridges
- Jefferson County, CO · 464 bridges
- Hamilton County, TN · 464 bridges
Similar average build year
Nearest mean year-built outside LA (1983 here).
- Dallas County, TX · avg 1983 · 3,230 bridges
- Bexar County, TX · avg 1983 · 2,342 bridges
- Sedgwick County, KS · avg 1983 · 1,333 bridges
- Will County, IL · avg 1983 · 649 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (463)
US0090
FairOver: ENGLISH BAYOU
3.1 MI EAST OF LA 3256, Calcasieu, LA
Built 1953 Load: 20.9 t ADT: 6,080
LA0027
FairOver: BUXTON CREEK
0.5 MI N OF LA 12, Calcasieu, LA
Built 1953 Load: 20.9 t ADT: 4,683
LA0108
FairOver: CHOUPIQUE BAYOU
LA0108, Calcasieu, LA
Built 1962 Load: 20.9 t ADT: 1,553
US0090
FairOver: KAYOUCHE COULEE
0.3 MI. E. OF LA 14, Calcasieu, LA
Built 1957 Load: 21.8 t ADT: 4,199
STEVENSON ST
FairOver: GUM CREEK
0.3 MI SOUTH OF US 90, Calcasieu, LA
Built 1968 Load: 22.0 t ADT: 207
W. SALE RD
FairOver: CONTRABAND BAYOU
0.9 MI W. OF LA 385, Calcasieu, LA
Built 1990 Load: 22.7 t ADT: 14,015
SOUTH POST OAK RD
FairOver: DRAIN
1.2 MI S of US 90, Calcasieu, LA
Built 2002 Load: 23.3 t ADT: 2,599
I0010
FairOver: DRAIN
1.7 MI EAST OF LA 3256, Calcasieu, LA
Built 1964 Load: 23.6 t ADT: 2,284
LA3020
FairOver: ANTOINE GULLY
0.5 MI. W OF LA 397, Calcasieu, LA
Built 1959 Load: 23.6 t ADT: 3,532
LA3020
FairOver: KAYOUCHE COULEE
2.7 MI. W. OF LA 397, Calcasieu, LA
Built 1959 Load: 23.6 t ADT: 3,532
LA0012
FairOver: BUXTON CREEK
0.3 MI EAST OF LA 27, Calcasieu, LA
Built 1956 Load: 23.7 t ADT: 10,277
US0171
FairOver: LITTLE INDIAN BAYOU
4.6 MI N LA 378 ON US171, Calcasieu, LA
Built 1996 Load: 23.7 t ADT: 32,659
LA1138-3
FairOver: KAYOUCHE COULEE
.51 MI EAST OF LA 14, Calcasieu, LA
Built 1959 Load: 23.7 t ADT: 6,658
LA1138-3
FairOver: KAYOUCHE COULEE
.51 MI EAST OF LA 14, Calcasieu, LA
Built 1959 Load: 23.7 t ADT: 10,981
LA0108
FairOver: DRAIN
2.6 MI SOUTH OF I-10, Calcasieu, LA
Built 1961 Load: 24.0 t ADT: 1,259
COMMON ST
FairOver: CONTRABAND BAYOU
0.06 MI N OF LA 3186, Calcasieu, LA
Built 1999 Load: 24.0 t ADT: 17,746
WARD LINE RD
FairOver: GOVERNMENT DITCH
3.8 MI SOUTH OF LA 14, Calcasieu, LA
Built 1987 Load: 24.3 t ADT: 1,326
N. KINNY AVE
FairOver: ENGLISH BAYOU LATERAL 14
0.2 MI N OF DAVID ST, Calcasieu, LA
Built 2001 Load: 24.3 t ADT: 50
W. LINCOLN RD
FairOver: CANAL
0.9 MI W OF LA 385, Calcasieu, LA
Built 1995 Load: 24.6 t ADT: 2,124
MILLER AVE
FairOver: CALCASIEU RIVER
0.4 MI N of MCKINLEY ST., Calcasieu, LA
Built 2013 Load: 24.9 t ADT: 4,463
I0210
FairOver: CONTRABAND BAYOU
.6 MI EAST OF LA 1138-2, Calcasieu, LA
Built 1964 Load: 24.9 t ADT: 65,748
I0210
FairOver: CONTRABAND BAYOU
.6 MI EAST OF LA 1138-2, Calcasieu, LA
Built 1964 Load: 24.9 t ADT: 608
LAKE ST
FairOver: BAYOU CONTRABAND
0.8 MI N OF I-210, Calcasieu, LA
Built 1982 Load: 24.9 t ADT: 17,888
CLAUDE HEBERT RD
FairOver: DRAINAGE DITCH
0.01 MI N OF LA3059, Calcasieu, LA
Built 2001 Load: 24.9 t ADT: 673
ROUTE 66
FairOver: BUXTON CREEK
3.5 MI W OF LA 27, Calcasieu, LA
Built 2001 Load: 24.9 t ADT: 345
N. LIGHTNER ST
FairOver: LATERAL L-14
0.1 MI E of LA 383, Calcasieu, LA
Built 2001 Load: 25.3 t ADT: 100
LOUIS ALLEMAN PKWY
FairOver: FARMERS L AND C CANAL
0.3 MI EAST OF LA 27, Calcasieu, LA
Built 2000 Load: 25.6 t ADT: 100
OLD SPANISH TRAIL
FairOver: CREEK
3.2 MI WEST OF LA 379, Calcasieu, LA
Built 1995 Load: 25.6 t ADT: 5,829
BIG WOODS RD
FairOver: CANAL
.3 M N. LA 3063, Calcasieu, LA
Built 2000 Load: 25.9 t ADT: 887
KIRKMAN ST
FairOver: DRAINAGE CANAL
0.1 MI. N. OF 9TH ST, Calcasieu, LA
Built 1928 Load: 25.9 t ADT: 6,422
EDGERLY RD
FairOver: LITTLE INDIAN BAYOU
8.6 MI. N. OF US 90, Calcasieu, LA
Built 2000 Load: 25.9 t ADT: 445
LA1138-2
FairOver: BAYOU CONTRABAND
.7 MI SOUTH OF I-10, Calcasieu, LA
Built 1961 Load: 26.2 t ADT: 20,242
E. LINCOLN RD
FairOver: HIPPOLYTE COULEE
0.2 MI E OF LA 385, Calcasieu, LA
Built 1986 Load: 26.2 t ADT: 678
OLD SPANISH TRAIL
FairOver: CREEK
2.0 MI WEST OF LA 379, Calcasieu, LA
Built 1995 Load: 26.6 t ADT: 344
US0171
FairOver: CALCASIEU RIVER
1.7 MI NORTH OF I-10, Calcasieu, LA
Built 1969 Load: 26.9 t ADT: 32,659
I0010
FairOver: LA 1256
I-10 OVER LA 27, Calcasieu, LA
Built 2004 Load: 26.9 t ADT: 86,969
I0010
FairOver: ANTOINNE GULLY
2.8 MI EAST OF US 171, Calcasieu, LA
Built 1964 Load: 27.2 t ADT: 71,509
I0010
FairOver: ANTOINNE GULLY
0.6 MI W OF LA 397, Calcasieu, LA
Built 1964 Load: 27.2 t ADT: 11,437
HODGES ST
FairOver: DRAINAGE CANAL
0.5 MI. S. OF BROAD ST., Calcasieu, LA
Built 1928 Load: 27.2 t ADT: 3,268
EAST PRIEN LAKE RD
FairOver: KAYOUCHE COULEE
0.8 MI EAST OF LA 14, Calcasieu, LA
Built 2005 Load: 27.5 t ADT: 5,210
PATTON STREET
FairOver: DINDE BAYOU
0.3 MI E OF LA 27, Calcasieu, LA
Built 2021 Load: 27.9 t ADT: 3,593
US0171
FairOver: I-10
0.3 MI N OF LA 3020, Calcasieu, LA
Built 1963 Load: 28.1 t ADT: 13,667
US0171
FairOver: I-10
0.3 MI N OF HWY 3020, Calcasieu, LA
Built 1963 Load: 28.1 t ADT: 18,040
ANTHONY FERRY RD
FairOver: COON GULLY
0.2 M N of LA 379, Calcasieu, LA
Built 1973 Load: 28.2 t ADT: 1,154
CARLYSS DR
FairOver: DRAIN
0.8 MI W of LA 1256, Calcasieu, LA
Built 2000 Load: 28.5 t ADT: 1,560
SIDNEY DEROUEN RD
FairOver: BELL CITY DRAINAGE CANAL
1.0 MI. E. OF HARRIS ROAD, Calcasieu, LA
Built 1999 Load: 28.8 t ADT: 295
LA0384
FairOver: INTRACOASTAL WATERWAY
6.5 MI N of LA 1144, Calcasieu, LA
Built 1979 Load: 29.0 t ADT: 988
I0210
FairOver: LA 14
I-210 OVER LA 14, Calcasieu, LA
Built 1976 Load: 29.0 t ADT: 61,445
I0210
FairOver: LA 14
I-210 OVER LA 14, Calcasieu, LA
Built 1976 Load: 29.0 t ADT: 608
US0171
FairOver: DIAMOND GULLY
3.6 MI N OF LA 378-US171, Calcasieu, LA
Built 1996 Load: 29.2 t ADT: 32,659
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.