Total bridges
31
Public highway bridges in Hinsdale County
County profile · official public datasets
Hinsdale County, CO
31 public highway bridges tracked in the FHWA National Bridge Inventory: 25.8% rated Good, 74.2% Fair, 0% Poor.
- 31
- Public bridges
- 25.8%
- Good condition
- 0%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Hinsdale County posts a top-5% lowest Poor-condition share among rated counties in the state across rated county bridge inventory.
- Top 5%
- lowest Poor share in state
- 0%
- Poor-condition share
- 31
- public highway bridges
- 1979
- 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.
Hinsdale County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Hinsdale County ranks #3 of 64 Colorado counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Hinsdale County, Colorado contains 31 public highway bridges. Roughly 25.8% are rated “Good,” 74.2% “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.
Good condition
25.8%
8 of 31 rated 7-9
Fair condition
74.2%
23 of 31 rated 5-6
Poor condition
0%
0 of 31 rated 4 or below
In-state Poor-share rank
#3 of 64
Among Colorado counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 31 NBI-tracked bridges by lowest applicable component rating.
Good 25.8% (8)
Fair 74.2% (23)
Poor 0% (0)
45.2% of Hinsdale County's bridges have passed the 50-year mark
14 of the 31 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 25.8% 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 Hinsdale County's bridges were built
31 bridges with a recorded construction year, grouped by decade
- 1950s
1950–1959
8 bridges
- 1960s
1960–1969
6 bridges
- 1980s
1980–1989
7 bridges
- 1990s
1990–1999
7 bridges
- 2000s 2
2000–2009
2 bridges
- 2010s 1
2010–2019
1 bridges
What this shows Construction peaked in the 1950s, when 8 of the county's bridges still in the inventory were built, which is 25.8% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year (1979) matches the Colorado average (1982).
How Hinsdale County compares with Colorado's closest counties by inventory size
The 5 Colorado counties nearest Hinsdale 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 1979 against a peer-group mean of 1976 is in line with the group.
Showing the 5 closest of 63 Colorado counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Kiowa County | 31 | 48.4% | 45.2% | 6.5% | 1986 |
| Hinsdale County (this page) | 31 | 25.8% | 74.2% | 0% | 1979 |
| Crowley County | 28 | 39.3% | 57.1% | 3.6% | 1980 |
| Dolores County | 28 | 17.9% | 75% | 7.1% | 1964 |
| Phillips County | 27 | 7.4% | 74.1% | 18.5% | 1973 |
| Teller County | 27 | 25.9% | 66.7% | 7.4% | 1977 |
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 Hinsdale 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 Hinsdale County, both outside Colorado so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside CO (31 bridges here).
- Ogemaw County, MI · 31 bridges
- Grant County, MN · 31 bridges
- Carson City County, NV · 31 bridges
- San Sebastián County, PR · 31 bridges
Similar average build year
Nearest mean year-built outside CO (1979 here).
- Pima County, AZ · avg 1979 · 1,150 bridges
- Jefferson County, KY · avg 1979 · 662 bridges
- Spartanburg County, SC · avg 1979 · 638 bridges
- McPherson County, KS · avg 1979 · 586 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (8)
WINDING ROAD 788
GoodOver: MINERAL CREEK
43 MI. S.W. GUNNISON CO., Hinsdale, CO
Built 1957 Load: 14.6 t ADT: 47
COUNTY ROAD 20
GoodOver: NORTH FORK HENSON CREEK
8.4 MI W OF LAKE CITY, Hinsdale, CO
Built 1986 Load: 18.6 t ADT: 166
FDR 520.2C
GoodOver: RIO GRANDE RIVER
0.1 MI ON FDR 520.2C, Hinsdale, CO
Built 2008 Load: 23.7 t ADT: 155
COUNTY ROAD 5/50
GoodOver: CEBOLLA CREEK
16.2 MI NE OF LAKE CITY, Hinsdale, CO
Built 1987 Load: 25.4 t ADT: 43
FDR 631
GoodOver: WILLIAMS CREEK
19.6 MI ON FDR 631, Hinsdale, CO
Built 1991 Load: 28.1 t ADT: 408
FDR 637
GoodOver: EAST TONER
1.20 MI ON FDR 637, Hinsdale, CO
Built 1965 Load: 32.7 t ADT: 50
FDR 631
GoodOver: WEMINUCHE CREEK
WEMINUCHE CREEK, Hinsdale, CO
Built 1997 Load: 33.7 t ADT: 34
COUNTY ROAD 5
GoodOver: ROCK CREEK
16.5 MI NE OF LAKE CITY, Hinsdale, CO
Built 1998 Load: 35.7 t ADT: 41
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.