US Bridges

SH 13 Ml over Mud Spring Draw

Good

Moffat County, Colorado · 30 Miles North of Craig · Structure no. A-06-K

Built
1998
27 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
860
2020 count
Owner
State
State Highway Agency

About this bridge

SH 13 Ml over Mud Spring Draw is a concrete culvert carrying SH 13 Ml over Mud Spring Draw in Moffat County, Colorado. It was built in 1998, so it is 27 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 860 vehicles a day, roughly 16% of them trucks, projected to reach 955 by 2040. The structure is 34 ft (10.4 m) long and 73 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesSH 13 Ml
CrossesMud Spring Draw
Location30 Miles North of Craig
RouteState Highway 13B
Coordinates40.88505, -107.59338
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating34.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span14 ft (4.3 m)
Deck width73 ft (22.2 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic860 (2020)
Projected traffic955 by 2040
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 SH 13 Ml over Mud Spring Draw built?

It was built in 1998, making it 27 years old in 2025.

What condition is SH 13 Ml over Mud Spring Draw 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 July 2024.

How much traffic does SH 13 Ml over Mud Spring Draw carry?

About 860 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is SH 13 Ml over Mud Spring Draw?

The structure is 34 ft (10.4 m) long with a longest span of 14 ft (4.3 m) and a deck 73 ft wide.

Who owns SH 13 Ml over Mud Spring Draw?

It is owned by the State Highway Agency.