County profile · official public datasets

Cheyenne County, CO

61 public highway bridges tracked in the FHWA National Bridge Inventory: 57.4% rated Good, 42.6% Fair, 0% Poor.

61
Public bridges
57.4%
Good condition
0%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Cheyenne County posts a top-5% lowest Poor-condition share among rated counties in the state across rated county bridge inventory.

Top 2%
lowest Poor share in state
0%
Poor-condition share
61
public highway bridges
1978
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.

Cheyenne County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Cheyenne County ranks #1 of 64 Colorado counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Cheyenne County, Colorado contains 61 public highway bridges. Roughly 57.4% are rated “Good,” 42.6% “Fair,” and 0% “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.

Total bridges

61

Public highway bridges in Cheyenne County

Good condition

57.4%

35 of 61 rated 7-9

Fair condition

42.6%

26 of 61 rated 5-6

Poor condition

0%

0 of 61 rated 4 or below

In-state Poor-share rank

#1 of 64

Among Colorado counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 61 NBI-tracked bridges by lowest applicable component rating.

Good
57.4% (35)
Fair
42.6% (26)
Poor
0% (0)

39.3% of Cheyenne County's bridges have passed the 50-year mark

24 of the 61 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 57.4% 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.

When Cheyenne County's bridges were built

61 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1990s, when 20 of the county's bridges still in the inventory were built, which is 32.8% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1978) matches the Colorado average (1982).

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

How Cheyenne County compares with Colorado's closest counties by inventory size

The 5 Colorado counties nearest Cheyenne County in number of bridges, with their condition splits. Its 0% Poor share is the 1st-lowest of these 6. Its average build year of 1978 against a peer-group mean of 1982 is in line with the group.

Showing the 5 closest of 63 Colorado counties eligible for comparison.

Bridge inventory size and condition shares for Cheyenne County and the 5 Colorado counties closest to it in inventory size
County Bridges Poor
Delta County 64 3.1%
Conejos County 62 14.5%
Pitkin County 62 3.2%
Montezuma County 61 8.2%
Cheyenne County (this page) 61 0%
San Miguel County 59 3.4%

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 Cheyenne 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 Cheyenne County, both outside Colorado so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside CO (61 bridges here).

Similar average build year

Nearest mean year-built outside CO (1978 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All bridges (61)

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.