US Bridges

County Road 31 over Stock Crossing

Good

Lincoln County, Colorado · Just South of Road 4D · Structure no. LIN-31-4C.9A

Built
2011
14 years old
Condition
Good
inspected May 2023
Type
Arch - Thru
Steel
Length
25 ft
1 main span
Daily traffic
63
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 31 over Stock Crossing is a steel arch - thru carrying County Road 31 over Stock Crossing in Lincoln County, Colorado. It was built in 2011, so it is 14 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 63 vehicles a day, roughly 10% of them trucks, projected to reach 80 by 2040. The structure is 25 ft (7.6 m) long and 40 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Road 31
CrossesStock Crossing
LocationJust South of Road 4D
RouteCounty Highway 0
CountyLincoln County
StateColorado
Coordinates39.56483, -103.49102
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeArch - Thru
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width40 ft (12.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63 (2020)
Projected traffic80 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 31 over Stock Crossing built?

It was built in 2011, making it 14 years old in 2025.

What condition is County Road 31 over Stock Crossing 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 May 2023.

How much traffic does County Road 31 over Stock Crossing carry?

About 63 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County Road 31 over Stock Crossing?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 40 ft wide.

Who owns County Road 31 over Stock Crossing?

It is owned by the County Highway Agency.