US Bridges

US 40 Ml over Walton Creek

Fair

Routt County, Colorado · SE Edge of Stmboat Sprngs · Structure no. C-09-I

Built
1990
35 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
62 ft
3 main spans
Daily traffic
9,200
2020 count
Owner
State
State Highway Agency

About this bridge

US 40 Ml over Walton Creek is a concrete culvert carrying US 40 Ml over Walton Creek in Routt County, Colorado. It was built in 1990, so it is 35 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 9,200 vehicles a day, roughly 5% of them trucks, projected to reach 10,764 by 2040. The structure is 62 ft (18.8 m) long and 94 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 40 Ml
CrossesWalton Creek
LocationSE Edge of Stmboat Sprngs
RouteU.S. Route 40A
Coordinates40.4497, -106.8158
Functional classUrban Other Principal 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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.5 US tons
Inventory rating38.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length62 ft (18.8 m)
Longest span20 ft (6.1 m)
Deck width94 ft (28.5 m)
Roadway width83 ft (25.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,200 (2020)
Projected traffic10,764 by 2040
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 US 40 Ml over Walton Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is US 40 Ml over Walton 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 April 2024.

How much traffic does US 40 Ml over Walton Creek carry?

About 9,200 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is US 40 Ml over Walton Creek?

The structure is 62 ft (18.8 m) long with a longest span of 20 ft (6.1 m) and a deck 94 ft wide.

Who owns US 40 Ml over Walton Creek?

It is owned by the State Highway Agency.