Total bridges
682
Public highway bridges in Caddo County
County profile · official public datasets
Caddo County, LA
682 public highway bridges tracked in the FHWA National Bridge Inventory: 39.9% rated Good, 53.7% Fair, 6.5% Poor.
- 682
- Public bridges
- 39.9%
- Good condition
- 6.5%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Caddo County posts a top-quartile lowest Poor-condition share among rated counties in the state across large county bridge inventory.
- Top 17%
- lowest Poor share in state
- 6.5%
- Poor-condition share
- 682
- public highway bridges
- 1986
- 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.
Caddo County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Caddo County ranks #11 of 64 Louisiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.5%). Caddo County, Louisiana contains 682 public highway bridges. Roughly 39.9% are rated “Good,” 53.7% “Fair,” and 6.5% “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
39.9%
272 of 682 rated 7-9
Fair condition
53.7%
366 of 682 rated 5-6
Poor condition
6.5%
44 of 682 rated 4 or below
In-state Poor-share rank
#11 of 64
Among Louisiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 682 NBI-tracked bridges by lowest applicable component rating.
Good 39.9% (272)
Fair 53.7% (366)
Poor 6.5% (44)
Caddo County's Poor-condition bridges carry 957,768 vehicle crossings a day
That is 7.2% of the county's reported daily bridge traffic on 6.5% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 21,767 crossings a day against 20,351 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 678 of 682 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
24.6% of Caddo County's bridges have passed the 50-year mark
168 of the 682 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 39.9% 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 10.3% of the county's Poor-condition bridge traffic
I0020 over M.P. RR, built 1965, carries 98,318 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 44-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 957,768 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Caddo County's bridges were built
682 bridges with a recorded construction year, grouped by decade
- 1920s 3
1920–1929
3 bridges
- 1930s 9
1930–1939
9 bridges
- 1940s 11
1940–1949
11 bridges
- 1950s 32
1950–1959
32 bridges
- 1960s
1960–1969
93 bridges
- 1970s
1970–1979
79 bridges
- 1980s
1980–1989
155 bridges
- 1990s
1990–1999
140 bridges
- 2000s 37
2000–2009
37 bridges
- 2010s
2010–2019
111 bridges
- 2020s 12
2020–2029
12 bridges
What this shows Construction peaked in the 1980s, when 155 of the county's bridges still in the inventory were built, which is 22.7% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1986) matches the Louisiana average (1982).
How Caddo County compares with Louisiana's closest counties by inventory size
The 5 Louisiana counties nearest Caddo County in number of bridges, with their condition splits. Its 6.5% Poor share is the 1st-lowest of these 6. Its average build year of 1986 against a peer-group mean of 1981 is 5 years newer.
Showing the 5 closest of 63 Louisiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Caddo County (this page) | 682 | 39.9% | 53.7% | 6.5% | 1986 |
| 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 | 463 | 19% | 73% | 8% | 1983 |
| Orleans County | 382 | 43.7% | 46.3% | 9.9% | 1976 |
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 Caddo 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 Caddo County, both outside Louisiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside LA (682 bridges here).
- Honolulu County, HI · 682 bridges
- Chester County, PA · 680 bridges
- El Paso County, CO · 686 bridges
- Broward County, FL · 686 bridges
Similar average build year
Nearest mean year-built outside LA (1986 here).
- El Paso County, TX · avg 1986 · 783 bridges
- Weld County, CO · avg 1986 · 614 bridges
- Polk County, IA · avg 1986 · 545 bridges
- Canadian County, OK · avg 1986 · 493 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (272)
LA3194
GoodOver: MCCAIN CREEK
2.7 MI. E OF LA 173, Caddo, LA
Built 2003 Load: 50.5 t ADT: 10,018
I0049
GoodOver: LA 511
I-49 OVER LA 511, Caddo, LA
Built 1993 Load: 50.8 t ADT: 28,142
WAGGONER AVE
GoodOver: BRUSH BAYOU
0.1 MI WEST OF US 171, Caddo, LA
Built 1990 Load: 51.8 t ADT: 652
I0049
GoodOver: MCCAIN CR
3.77 MI S OF LA 1, Caddo, LA
Built 2016 Load: 53.5 t ADT: 87,567
I0049
GoodOver: MCCAIN CREEK
0.3 MI. N. OF LA 3194, Caddo, LA
Built 2016 Load: 55.4 t ADT: 2,869
WYNGATE CIRCLE
GoodOver: VIRGINIA AVE. DITCH
1.3 MI EAST OF US 171, Caddo, LA
Built 1990 Load: 57.3 t ADT: 600
I0049
GoodOver: UNKNOWN CREEK
0.93 M. N. OF LA 170, Caddo, LA
Built 2013 Load: 57.7 t ADT: 53,023
I0049
GoodOver: UNKNOWN CREEK
0.93 M. N. OF LA 170, Caddo, LA
Built 2013 Load: 57.7 t ADT: 6,846
I0049
GoodOver: UNKNOWN POND
1.21 M. N. OF LA 170, Caddo, LA
Built 2013 Load: 58.0 t ADT: 53,023
I0049
GoodOver: UNKNOWN POND
1.21 M. N. OF LA 170, Caddo, LA
Built 2013 Load: 58.0 t ADT: 6,846
Flournoy Lucas Rd
GoodOver: TRIB. TO BRUSHY BAYOU
1.1 MILES WEST OF I-49, Caddo, LA
Built 2008 Load: 58.0 t ADT: 5,718
I0049
GoodOver: MCCAIN CREEK
1.88 MI. S. OF LA 1, Caddo, LA
Built 2016 Load: 72.6 t ADT: 51,551
Roy Rd
GoodOver: TRIBUTARY TO MCCAIN CREE
0.3 MI. S. OF LA 538, Caddo, LA
Built 2015 Load: 72.6 t ADT: 37
Speedway Drive
GoodOver: TRIB. TO CROSS BAYOU
0.2 MILES EAST OF LA 169, Caddo, LA
Built 2008 Load: 74.5 t ADT: 25
I0049
GoodOver: MCCAIN CREEK TRIB
3.52 MI S OF LA 1, Caddo, LA
Built 2016 Load: 74.5 t ADT: 51,551
I0049
GoodOver: TRIB. TO MCCAIN CREEK
.52 MI N. OF LA 3194, Caddo, LA
Built 2016 Load: 74.5 t ADT: 87,567
I0049
GoodOver: DOE SLOUGH CANAL
1.0 MI SOUTH OF LA 173, Caddo, LA
Built 2013 Load: 74.5 t ADT: 42,454
I0049
GoodOver: HARTMAN BRANCH
0.92 MI S. OF LA 168, Caddo, LA
Built 2014 Load: 74.5 t ADT: 53,023
LA0169
GoodOver: BAYOU
2.25 MI WEST JCT US 71, Caddo, LA
Built 1981 Load: 74.5 t ADT: 311
SUNNYBROOK ST.
GoodOver: BRUSHY BAYOU
0.2 MI W OF LA 171, Caddo, LA
Built 1956 Load: 74.5 t ADT: 1,200
Mooringsport-Latex
GoodOver: MILLER BRANCH
0.43 MI E OF TEXAS LINE, Caddo, LA
Built 1999 Load: 74.5 t ADT: 43
I0049
GoodOver: MCCAIN CR TRIB
3.82 MI S OF LA 1, Caddo, LA
Built 2016 Load: 94.3 t ADT: 87,567
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.