US Bridges

US 34 Ml over Empire Canal

Good

Weld County, Colorado · 15.3 MI E of JCT SH 37 · Structure no. C-19-AH

Built
1983
42 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
101 ft
1 main span
Daily traffic
6,900
2020 count
Owner
State
State Highway Agency

About this bridge

US 34 Ml over Empire Canal is a prestressed concrete stringer/multi-beam or girder carrying US 34 Ml over Empire Canal in Weld County, Colorado. It was built in 1983, so it is 42 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 6,900 vehicles a day, roughly 15% of them trucks, projected to reach 10,074 by 2040. The structure is 101 ft (30.8 m) long and 43 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

CarriesUS 34 Ml
CrossesEmpire Canal
Location15.3 MI E of JCT SH 37
RouteU.S. Route 34A
Coordinates40.29443, -104.31015
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating78.9 US tons
Inventory rating41.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length101 ft (30.8 m)
Longest span94 ft (28.7 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,900 (2020)
Projected traffic10,074 by 2040
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 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 34 Ml over Empire Canal built?

It was built in 1983, making it 42 years old in 2025.

What condition is US 34 Ml over Empire Canal 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 November 2023.

How much traffic does US 34 Ml over Empire Canal carry?

About 6,900 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is US 34 Ml over Empire Canal?

The structure is 101 ft (30.8 m) long with a longest span of 94 ft (28.7 m) and a deck 43 ft wide.

Who owns US 34 Ml over Empire Canal?

It is owned by the State Highway Agency.