US Bridges

County Road 8 over Mineral Creek

Good

San Juan County, Colorado · 0.2 MI W of US 550 · Structure no. SJN08-00.2A

Built
1993
32 years old
Condition
Good
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
199
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 8 over Mineral Creek is a prestressed concrete tee beam carrying County Road 8 over Mineral Creek in San Juan County, Colorado. It was built in 1993, so it is 32 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 199 vehicles a day, projected to reach 207 by 2042. The structure is 43 ft (13 m) long and 20 ft wide. If it were closed, the detour would be 92 mi (148 km).

Location

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CarriesCounty Road 8
CrossesMineral Creek
Location0.2 MI W of US 550
RouteCounty Highway 0
CountySan Juan County
StateColorado
Coordinates37.85067, -107.72619
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating63.9 US tons
Inventory rating36.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length43 ft (13 m)
Longest span40 ft (12.1 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic199 (2022)
Projected traffic207 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed92 mi (148 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 8 over Mineral Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is County Road 8 over Mineral Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does County Road 8 over Mineral Creek carry?

About 199 vehicles per day (2022 count).

How long is County Road 8 over Mineral Creek?

The structure is 43 ft (13 m) long with a longest span of 40 ft (12.1 m) and a deck 20 ft wide.

Who owns County Road 8 over Mineral Creek?

It is owned by the County Highway Agency.