Total bridges
26
Public highway bridges in Mineral County
County profile · official public datasets
Mineral County, CO
26 public highway bridges tracked in the FHWA National Bridge Inventory: 34.6% rated Good, 65.4% Fair, 0% Poor.
- 26
- Public bridges
- 34.6%
- Good condition
- 0%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Mineral County pairs a top-10% lowest Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- Top 6%
- lowest Poor share in state
- 0%
- Poor-condition share
- 26
- public highway bridges
- 1973
- 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.
Mineral County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Mineral County ranks #4 of 64 Colorado counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Mineral County, Colorado contains 26 public highway bridges. Roughly 34.6% are rated “Good,” 65.4% “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
34.6%
9 of 26 rated 7-9
Fair condition
65.4%
17 of 26 rated 5-6
Poor condition
0%
0 of 26 rated 4 or below
In-state Poor-share rank
#4 of 64
Among Colorado counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 26 NBI-tracked bridges by lowest applicable component rating.
Good 34.6% (9)
Fair 65.4% (17)
Poor 0% (0)
42.3% of Mineral County's bridges have passed the 50-year mark
11 of the 26 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 34.6% 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 Mineral County's bridges were built
26 bridges with a recorded construction year, grouped by decade
- 1930s 2
1930–1939
2 bridges
- 1950s
1950–1959
7 bridges
- 1960s 1
1960–1969
1 bridges
- 1970s 3
1970–1979
3 bridges
- 1980s
1980–1989
9 bridges
- 1990s 3
1990–1999
3 bridges
- 2010s 1
2010–2019
1 bridges
What this shows Construction peaked in the 1980s, when 9 of the county's bridges still in the inventory were built, which is 34.6% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1973, 9 years older than the Colorado average of 1982.
How Mineral County compares with Colorado's closest counties by inventory size
The 5 Colorado counties nearest Mineral County in number of bridges, with their condition splits. Its 0% Poor share is the 2nd-lowest of these 6. Its average build year of 1973 against a peer-group mean of 1975 is in line with the group.
Showing the 5 closest of 63 Colorado counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Hinsdale County | 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 |
| Mineral County (this page) | 26 | 34.6% | 65.4% | 0% | 1973 |
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 Mineral 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 Mineral County, both outside Colorado so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside CO (26 bridges here).
- Webster County, GA · 26 bridges
- St. James County, LA · 26 bridges
- Garfield County, MT · 26 bridges
- Petroleum County, MT · 26 bridges
Similar average build year
Nearest mean year-built outside CO (1973 here).
- Jefferson County, AL · avg 1973 · 1,068 bridges
- Erie County, NY · avg 1973 · 906 bridges
- Davidson County, TN · avg 1973 · 832 bridges
- Lancaster County, PA · avg 1973 · 801 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (17)
US 160 ML
FairOver: HILLSIDE
15.5 MI EAST OF JCT SH 84, Mineral, CO
Built 1981 Load: 10.5 t ADT: 2,900
COUNTY ROAD 430
FairOver: RIO GRANDE RIVER
0.8 MI SE OF RIVERSIDE ME, Mineral, CO
Built 1930 Load: 14.2 t ADT: 47
FDR 522
FairOver: FERN CREEK
.9 MI ON FSR 522, Mineral, CO
Built 1966 Load: 18.5 t ADT: 58
FDR 648
FairOver: WOLF CREEK
13.5 MI NNE OF PAGOSA SPJ, Mineral, CO
Built 1956 Load: 21.4 t ADT: 113
SH 149 ML
FairOver: RIO GRANDE
4.1 MI SW OF CREEDE, Mineral, CO
Built 1979 Load: 25.1 t ADT: 1,000
3RD STREET
FairOver: WILLOW CREEK
IN TOWN OF CREEDE, Mineral, CO
Built 1988 Load: 26.0 t ADT: 203
5TH STREET
FairOver: WILLOW CREEK
IN TOWN OF CREEDE, Mineral, CO
Built 1988 Load: 27.6 t ADT: 318
SH 149 ML
FairOver: RIO GRANDE
2.5 MI SE OF CREEDE, Mineral, CO
Built 1959 Load: 29.6 t ADT: 1,400
FDR 648
FairOver: W FORK OF SAN JUAN RIVER
13.7 MI NNE OF PAGOSA SPG, Mineral, CO
Built 1954 Load: 30.9 t ADT: 32
FDR 380
FairOver: SOUTH FORK
.10 MI ON FDR 380, Mineral, CO
Built 1953 Load: 35.3 t ADT: 143
US 160 ML
FairOver: PASS CREEK
6 MI E OF WOLF CREEK PASS, Mineral, CO
Built 1987 Load: 36.3 t ADT: 2,900
SH 149 ML
FairOver: CLEAR CREEK
19 MILES WEST OF CREEDE, Mineral, CO
Built 1982 Load: 36.4 t ADT: 1,100
FDR 380
FairOver: PARK CREEK
2.4 MI ON FDR 380, Mineral, CO
Built 1953 Load: 39.9 t ADT: 184
COUNTY ROAD 806
FairOver: RIO GRANDE RIVER
2.2 MI S OF CREEDE, Mineral, CO
Built 1997 Load: 46.2 t ADT: 869
SH 149 ML
FairOver: WILLOW CREEK
CREEDE, Mineral, CO
Built 1930 Load: 51.7 t ADT: 1,800
COUNTY ROAD 502
FairOver: WEST WILLOW CREEK
1.2 MI N OF CREEDE, Mineral, CO
Built 1998 Load: 56.2 t ADT: 158
US 160 ML
FairOver: S FK RIO GRANDE RIVER
7.5 MI E OF WOLF CRK PASS, Mineral, CO
Built 1977 Load: 96.9 t ADT: 2,900
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.