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.
Fair-condition bridges (338)
I0210
FairOver: US 90
I-210 OVER US 90, Calcasieu, LA
Built 1977 Load: 33.6 t ADT: 608
I0010
FairOver: US 90 & SP RR
I-10 OVER US 90, Calcasieu, LA
Built 1961 Load: 33.6 t ADT: 71,437
I0010
FairOver: US 90 & SP RR
I-10 OVER US 90, Calcasieu, LA
Built 1961 Load: 33.6 t ADT: 11,437
LA3063
FairOver: I-10
0.8 MI S OF US 90, Calcasieu, LA
Built 1966 Load: 33.6 t ADT: 1,918
LA0108
FairOver: I-10
3.0 MILES EAST OF JCT LA, Calcasieu, LA
Built 1962 Load: 33.7 t ADT: 22,287
GRAY RD
FairOver: VINTON CANAL
2.2 MI W OF LA 108, Calcasieu, LA
Built 1991 Load: 34.0 t ADT: 706
LA0389
FairOver: BUXTON CREEK
0.5 MI N OF LA 12, Calcasieu, LA
Built 2003 Load: 34.3 t ADT: 1,874
CHOUPIQUE ROAD
FairOver: I-10
5.2 MI N OF LA 108, Calcasieu, LA
Built 1965 Load: 34.3 t ADT: 4,500
LA0383
FairOver: I-10
LA 383 OVER I-10, Calcasieu, LA
Built 1964 Load: 34.5 t ADT: 677
I0210
FairOver: M P RR/KAYOUCHE COULEE
1.03 MI EAST OF LA 14, Calcasieu, LA
Built 1976 Load: 34.5 t ADT: 55,407
I0210
FairOver: M P RR/KAYOUCHE COULEE
1.03 MI EAST OF LA 14, Calcasieu, LA
Built 1976 Load: 34.5 t ADT: 608
WELCOME RD
FairOver: MARSH BAYOU
4.5 MI EAST OF US 171, Calcasieu, LA
Built 2004 Load: 35.0 t ADT: 182
I0210
FairOver: I 10; SP RR; KCS RR
.01 MI SOUTH OF I-10, Calcasieu, LA
Built 1969 Load: 35.4 t ADT: 608
I0210
FairOver: UPRR
.2 MI EAST OF US 90, Calcasieu, LA
Built 1977 Load: 35.4 t ADT: 39,934
HUNGERFORD OPS
FairOver: I-10
1.9 MI EAST OF LA 397, Calcasieu, LA
Built 1964 Load: 35.4 t ADT: 5,240
LA0108
FairOver: BAYOU DINDE
2.5 MI. NE OF LA 1133, Calcasieu, LA
Built 1977 Load: 35.4 t ADT: 22,287
GREEN ISLAND RD
FairOver: GREEN ISLAND MARSH CREEK
5.3 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 35.6 t ADT: 125
I0210
FairOver: PRIEN LAKE ROAD
I-210 OVER LA 1138-2, Calcasieu, LA
Built 1964 Load: 36.3 t ADT: 65,748
I0210
FairOver: PRIEN LAKE ROAD
I-210 OVER LA 1138-2, Calcasieu, LA
Built 1964 Load: 36.3 t ADT: 608
I0210
FairOver: UPRR
.2 MI EAST OF US 90, Calcasieu, LA
Built 1977 Load: 36.3 t ADT: 3,857
FABACHER RD
FairOver: CANAL
0.7 MI S of US 90, Calcasieu, LA
Built 1990 Load: 36.6 t ADT: 146
HICKORY BRANCH RD
FairOver: INDIAN BAYOU
1 MI W OF N PERKINS FERRY, Calcasieu, LA
Built 1991 Load: 36.6 t ADT: 585
W. VERDINE RD
FairOver: GUM SLOUGH
0.1 MI. N. OF US 90, Calcasieu, LA
Built 2011 Load: 36.9 t ADT: 200
HECKER RD
FairOver: ARCENEAUX BAYOU
0.4 MI N of River Rd, Calcasieu, LA
Built 1993 Load: 36.9 t ADT: 814
BANKENS RD
FairOver: LITTLE RIVER RELIEF
2.6 MI E OF LA 27, Calcasieu, LA
Built 1995 Load: 36.9 t ADT: 1,076
COFFEY RD
FairOver: Indian Bayou
0.2 MI E of SUTHERLAND RD, Calcasieu, LA
Built 1997 Load: 36.9 t ADT: 4,016
HOLBROOK PARK RD
FairOver: RIVER
1.8 MI EAST OF LA 27, Calcasieu, LA
Built 1995 Load: 36.9 t ADT: 618
LA3059
FairOver: BURT BAYOU
4.8 MI E of US 171, Calcasieu, LA
Built 1976 Load: 37.2 t ADT: 2,383
I0010
FairOver: HAMPTONS COULEE
0.08 MI N OF I-10 WB, Calcasieu, LA
Built 1966 Load: 37.2 t ADT: 3,799
LA0012
FairOver: MORMAN SLOUGH
3.4 MI W of LA 109, Calcasieu, LA
Built 2012 Load: 37.3 t ADT: 3,365
LA0012
FairOver: LONG SLOUGH
3.5 MI W of LA 109, Calcasieu, LA
Built 2013 Load: 37.3 t ADT: 3,365
E DAVE DUGAS RD
FairOver: CANAL
0.5 MI E of LA 27, Calcasieu, LA
Built 2014 Load: 37.3 t ADT: 2,232
LORRAINE ROAD
FairOver: LACASSINE BAYOU
2.0 MI EAST OF LA 101, Calcasieu, LA
Built 2004 Load: 37.5 t ADT: 20
GUM ISLAND RD
FairOver: SABINE CANAL
0.4 MI EAST OF LA 108, Calcasieu, LA
Built 1999 Load: 37.6 t ADT: 463
HECKER RD
FairOver: BAYOU SERPENT
2.2 MI NORTH OF LA 3059, Calcasieu, LA
Built 1999 Load: 37.6 t ADT: 574
OLD RIVER RD
FairOver: CANAL
2.8 MI NORTH OF LA 12, Calcasieu, LA
Built 1994 Load: 37.6 t ADT: 890
OLD RIVER RD
FairOver: BESS BRANCH
5.0 MI N of LA 12, Calcasieu, LA
Built 1999 Load: 37.6 t ADT: 400
GREEN ISLAND RD
FairOver: BEAR HEAD CREEK
2.1 MI EAST OF LA 109, Calcasieu, LA
Built 1997 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: GREEN ISLAND MARSH
05.24 MI. N. OF INT 78, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 125
GREEN ISLAND RD
FairOver: GREEN ISLAND MARSH
5.6 MI E of LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 150
GREEN ISLAND RD
FairOver: CREEK
1.9 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: CREEK
1.4 MI E OF LA109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: LONG MARSH CREEK
4.4 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: LONG MARSH CREEK RELIEF
4.4 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: LEE MARSH CREEK
3.6 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
OAK ST
FairOver: BUXTON CREEK
0.1 MI N OF LA 12, Calcasieu, LA
Built 1991 Load: 37.6 t ADT: 160
LA0027
FairOver: I-10
2.2 MI N of LA 108, Calcasieu, LA
Built 1988 Load: 37.9 t ADT: 19,872
LA0385
FairOver: BLACK BAYOU
2.3 MI NORTH OF LA 401, Calcasieu, LA
Built 1974 Load: 38.1 t ADT: 3,197
LA3059
FairOver: LEBLEU DITCH
6.7 MI EAST OF US 171, Calcasieu, LA
Built 1976 Load: 38.1 t ADT: 2,383
I0010
FairOver: US 90B (ENTERPRISE BLVD)
1.0 MI E of LA 385, Calcasieu, LA
Built 1961 Load: 38.1 t ADT: 73,488
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.