US Bridges

County Road 27 over Mine Access

Good

Routt County, Colorado · 1 MI S of CR 33 · Structure no. 107002701.0967

Built
2010
15 years old
Condition
Good
inspected October 2024
Type
Arch - Deck
Steel
Length
43 ft
1 main span
Daily traffic
864
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 27 over Mine Access is a steel arch - deck carrying County Road 27 over Mine Access in Routt County, Colorado. It was built in 2010, so it is 15 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 864 vehicles a day, roughly 37% of them trucks, projected to reach 1,028 by 2043. The structure is 43 ft (13 m) long and 74 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCounty Road 27
CrossesMine Access
Location1 MI S of CR 33
RouteCounty Highway 0
Coordinates40.3478, -107.08276
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length43 ft (13 m)
Longest span43 ft (13 m)
Deck width74 ft (22.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic864 (2023)
Projected traffic1,028 by 2043
Trucks37%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Road 27 over Mine Access built?

It was built in 2010, making it 15 years old in 2025.

What condition is County Road 27 over Mine Access 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 October 2024.

How much traffic does County Road 27 over Mine Access carry?

About 864 vehicles per day (2023 count), of which roughly 37% are trucks.

How long is County Road 27 over Mine Access?

The structure is 43 ft (13 m) long with a longest span of 43 ft (13 m) and a deck 74 ft wide.

Who owns County Road 27 over Mine Access?

It is owned by the County Highway Agency.