US Bridges

SH 34 Ml over Draw

Fair

Larimer County, Colorado · 7.5 MI E of Estes Park · Structure no. C-15-AJ

Built
1978
47 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
5,800
2020 count
Owner
State
State Highway Agency

About this bridge

SH 34 Ml over Draw is a concrete culvert carrying SH 34 Ml over Draw in Larimer County, Colorado. It was built in 1978, so it is 47 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 5,800 vehicles a day, roughly 2% of them trucks, projected to reach 7,250 by 2040. The structure is 21 ft (6.4 m) long and 46 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSH 34 Ml
CrossesDraw
Location7.5 MI E of Estes Park
RouteU.S. Route 34A
Coordinates40.41105, -105.40034
Functional classRural Principal Arterial - Other

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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.7 US tons
Inventory rating35.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width46 ft (14 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2020)
Projected traffic7,250 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 34 Ml over Draw built?

It was built in 1978, making it 47 years old in 2025.

What condition is SH 34 Ml over Draw 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 September 2023.

How much traffic does SH 34 Ml over Draw carry?

About 5,800 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is SH 34 Ml over Draw?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 46 ft wide.

Who owns SH 34 Ml over Draw?

It is owned by the State Highway Agency.