US Bridges

SH 131 Ml over Mckinnis Creek

Fair

Routt County, Colorado · 3 Miles South of HWY 40 J · Structure no. C-09-AC

Built
2001
24 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
4,600
2020 count
Owner
State
State Highway Agency

About this bridge

SH 131 Ml over Mckinnis Creek is a concrete culvert carrying SH 131 Ml over Mckinnis Creek in Routt County, Colorado. It was built in 2001, so it is 24 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,600 vehicles a day, roughly 4% of them trucks, projected to reach 5,704 by 2040. The structure is 22 ft (6.7 m) long and 64 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSH 131 Ml
CrossesMckinnis Creek
Location3 Miles South of HWY 40 J
RouteState Highway 131B
Coordinates40.3923, -106.8257
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3.2 m)
Deck width64 ft (19.5 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,600 (2020)
Projected traffic5,704 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 131 Ml over Mckinnis Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is SH 131 Ml over Mckinnis Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does SH 131 Ml over Mckinnis Creek carry?

About 4,600 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is SH 131 Ml over Mckinnis Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3.2 m) and a deck 64 ft wide.

Who owns SH 131 Ml over Mckinnis Creek?

It is owned by the State Highway Agency.