US Bridges

SH 13 Ml over Pine Ridge Gulch

Fair

Moffat County, Colorado · SW Edge of Craig · Structure no. C-06-P

Built
1973
52 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
44 ft
3 main spans
Daily traffic
2,800
2020 count
Owner
State
State Highway Agency

About this bridge

SH 13 Ml over Pine Ridge Gulch is a concrete culvert carrying SH 13 Ml over Pine Ridge Gulch in Moffat County, Colorado. It was built in 1973, so it is 52 years old, older 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 2,800 vehicles a day, roughly 14% of them trucks, projected to reach 3,248 by 2040. The structure is 44 ft (13.3 m) long and 107 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSH 13 Ml
CrossesPine Ridge Gulch
LocationSW Edge of Craig
RouteState Highway 13A
Coordinates40.509, -107.5793
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating78.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length44 ft (13.3 m)
Longest span16 ft (4.9 m)
Deck width107 ft (32.6 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2020)
Projected traffic3,248 by 2040
Trucks14%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Pine Ridge Gulch built?

It was built in 1973, making it 52 years old in 2025.

What condition is SH 13 Ml over Pine Ridge Gulch 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 SH 13 Ml over Pine Ridge Gulch carry?

About 2,800 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is SH 13 Ml over Pine Ridge Gulch?

The structure is 44 ft (13.3 m) long with a longest span of 16 ft (4.9 m) and a deck 107 ft wide.

Who owns SH 13 Ml over Pine Ridge Gulch?

It is owned by the State Highway Agency.