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)
US0171
FairOver: LITTLE INDIAN BAYOU
4.6 MI N LA378 ON US171, Calcasieu, LA
Built 1997 Load: 29.2 t ADT: 18,040
US0171
FairOver: DIAMOND GULLY
12 MI S OF LA12, Calcasieu, LA
Built 1997 Load: 29.5 t ADT: 18,040
7TH ST
FairOver: DRAIN
0.3 MI E of LA 385, Calcasieu, LA
Built 1999 Load: 29.5 t ADT: 2,385
LA0027
FairOver: HOUSTON RIVER
0.3 MI N OF LA 379, Calcasieu, LA
Built 1982 Load: 29.8 t ADT: 7,798
WEST LYONS ST
FairOver: CANAL
0.3 MI NORTH OF US 90, Calcasieu, LA
Built 2009 Load: 30.1 t ADT: 200
MANCHESTER RD
FairOver: FARMERS L & C CO. CANAL
3.1 MI N of LA 14, Calcasieu, LA
Built 1983 Load: 30.1 t ADT: 276
WEST PARISH RD
FairOver: CANAL
0.7 MI WEST OF LA 1256, Calcasieu, LA
Built 1980 Load: 30.1 t ADT: 340
EDGERLY RD
FairOver: HOUSTON RIVER
6.2 MI. N. OF US 90, Calcasieu, LA
Built 1982 Load: 30.1 t ADT: 583
I0010
FairOver: KAYOUCHE COULEE
0.8 MI EAST OF US 171, Calcasieu, LA
Built 1964 Load: 30.5 t ADT: 71,509
LA0108
FairOver: COON GULLY
.65 MI SOUTH OF I-10, Calcasieu, LA
Built 2006 Load: 30.8 t ADT: 762
I0210
FairOver: HOLLYHILL RD
.5 MI EAST OF LA 1138-2, Calcasieu, LA
Built 1964 Load: 30.8 t ADT: 65,748
I0010
FairOver: LA 385
I-10 OVER LA 385, Calcasieu, LA
Built 1961 Load: 30.8 t ADT: 73,488
I0010
FairOver: LA 385
I-10 OVER LA 385, Calcasieu, LA
Built 1961 Load: 30.8 t ADT: 11,437
I0010
FairOver: OPELOUSAS ST
0.7 MI EAST OF US 90, Calcasieu, LA
Built 1961 Load: 30.8 t ADT: 71,437
I0010
FairOver: OPELOUSAS ST
0.6 MI W of US 171, Calcasieu, LA
Built 1961 Load: 30.8 t ADT: 11,437
GOODMAN RD
FairOver: I-10
0.2 MI OF LA 3020, Calcasieu, LA
Built 1977 Load: 30.8 t ADT: 1,400
FORD ST
FairOver: FARMERS L & C CO. CANAL
0.03 MI N of 8TH ST, Calcasieu, LA
Built 1928 Load: 30.8 t ADT: 112
MOSS ST
FairOver: FARMERS L & C CO. CANAL
0.006 MI N of 8TH ST, Calcasieu, LA
Built 1960 Load: 30.8 t ADT: 294
6TH ST
FairOver: FARMERS L & C CO. CANAL
0.2 MI E of LA 385, Calcasieu, LA
Built 1960 Load: 30.8 t ADT: 431
WEST LINCOLN ST
FairOver: CANAL
0.2 MI NORTH OF US 90, Calcasieu, LA
Built 2009 Load: 31.1 t ADT: 200
I0010
FairOver: HAMPTONS COULEE
1.3 MI EAST OF LA 3063, Calcasieu, LA
Built 1966 Load: 31.1 t ADT: 86,969
I0010
FairOver: HAMPTONS COULEE
1.1 MI S OF US 90, Calcasieu, LA
Built 1966 Load: 31.1 t ADT: 3,799
LA0109
FairOver: BESS BRANCH
4.3 MI N OF LA 12, Calcasieu, LA
Built 2010 Load: 31.8 t ADT: 1,749
LA0109
FairOver: BAYOU
2.1 MI N OF LA 12, Calcasieu, LA
Built 2010 Load: 31.8 t ADT: 1,749
US0090
FairOver: I-10
0.4 MI S OF LA 3112, Calcasieu, LA
Built 1966 Load: 31.8 t ADT: 4,815
LA0397
FairOver: I-10
0.3 MI N OF LA 3020, Calcasieu, LA
Built 1964 Load: 31.8 t ADT: 9,291
I0010
FairOver: V.E. WASHINGTON AVE
7.4 MI E OF LA 108, Calcasieu, LA
Built 1961 Load: 31.8 t ADT: 71,437
I0010
FairOver: MO PACIFIC RR
1.8 MI W OF US 171, Calcasieu, LA
Built 1961 Load: 31.8 t ADT: 11,437
I0010
FairOver: SHATTUCK ST
0.4 MI E OF US 90B, Calcasieu, LA
Built 1963 Load: 31.8 t ADT: 71,437
I0010
FairOver: SHATTUCK ST
1.5 MI W OF US 171, Calcasieu, LA
Built 1963 Load: 31.8 t ADT: 11,437
I0210
FairOver: I210 NB TO I10 WB
I-210 NB TO I-10 WB, Calcasieu, LA
Built 1977 Load: 31.8 t ADT: 3,857
US0090
FairOver: GUM GULLY
1.0 MI E of LA 109, Calcasieu, LA
Built 1954 Load: 32.4 t ADT: 3,645
US0090
FairOver: DRAIN
2.9 MI E OF LA 3063, Calcasieu, LA
Built 1954 Load: 32.4 t ADT: 2,509
US0090
FairOver: BAYOU
4.6 MI EAST OF LA 3063, Calcasieu, LA
Built 1954 Load: 32.4 t ADT: 2,509
US0090
FairOver: DRAIN
0.6 MI EAST OF LA 27, Calcasieu, LA
Built 1955 Load: 32.4 t ADT: 13,695
US0090
FairOver: MAPLE FORK
1.8 MI EAST OF LA 27, Calcasieu, LA
Built 1932 Load: 32.4 t ADT: 13,695
US0090
FairOver: DRAIN
1.9 MI E. of LA 108, Calcasieu, LA
Built 1983 Load: 32.4 t ADT: 13,695
US0090
FairOver: BAYOU OSIER
0.9 MI W OF I-210, Calcasieu, LA
Built 1958 Load: 32.4 t ADT: 6,080
US0090
FairOver: DRAIN
1.8 MI EAST OF I-210, Calcasieu, LA
Built 1958 Load: 32.4 t ADT: 6,080
LA0012
FairOver: CANAL
3.2 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 2,573
LA0012
FairOver: CANAL
5.3 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 3,097
LA0012
FairOver: CANAL
7.8 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 2,155
LA0012
FairOver: CANAL
9.4 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 3,097
LA0012
FairOver: CANAL
10.0 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 2,155
LA0027
FairOver: DRAIN
4.4 MI S OF LA 1133, Calcasieu, LA
Built 1954 Load: 32.4 t ADT: 6,981
RUTH ST
FairOver: DINDE BAYOU
1.0 MI N of I-10, Calcasieu, LA
Built 1965 Load: 32.4 t ADT: 19,402
LA0389
FairOver: DRAIN
2.2 MI N OF LA 12, Calcasieu, LA
Built 1959 Load: 32.4 t ADT: 1,841
LA0389
FairOver: DRAIN
0.9 MI N OF LA 12, Calcasieu, LA
Built 1959 Load: 32.4 t ADT: 1,304
LA0108
FairOver: SPRING GULLY
4.6 MI W OF LA 27, Calcasieu, LA
Built 1962 Load: 32.4 t ADT: 1,553
LA0027
FairOver: DRAIN
3.3 MI N of LA 384, Calcasieu, LA
Built 1957 Load: 32.4 t ADT: 1,482
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.