US Bridges

E-470 EB over Happy Canyon Creek

Good

Douglas County, Colorado · 3.26 MI from I 25 · Structure no. E-470-3.26A

Built
1990
35 years old, rebuilt 2004
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
136 ft
1 main span
Daily traffic
24,896
2018 count
Owner
Toll Authority
Local Toll Authority

About this bridge

E-470 EB over Happy Canyon Creek is a prestressed concrete stringer/multi-beam or girder carrying E-470 EB over Happy Canyon Creek in Douglas County, Colorado. It was built in 1990 and reconstructed in 2004, 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 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 24,896 vehicles a day, roughly 6% of them trucks, projected to reach 42,323 by 2038. The structure is 136 ft (41.5 m) long and 86 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesE-470 EB
CrossesHappy Canyon Creek
Location3.26 MI from I 25
Coordinates39.55475, -104.81208
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 protection8 Very GoodNo problems noted.
Last inspectionAugust 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 rating51.5 US tons
Inventory rating26.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length136 ft (41.5 m)
Longest span134 ft (40.9 m)
Deck width86 ft (26.2 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,896 (2018)
Projected traffic42,323 by 2038
Trucks6%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerLocal Toll Authority
Maintained byLocal Toll Authority
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 E-470 EB over Happy Canyon Creek built?

It was built in 1990, making it 35 years old in 2025. It was reconstructed in 2004.

What condition is E-470 EB over Happy Canyon Creek 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 August 2024.

How much traffic does E-470 EB over Happy Canyon Creek carry?

About 24,896 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is E-470 EB over Happy Canyon Creek?

The structure is 136 ft (41.5 m) long with a longest span of 134 ft (40.9 m) and a deck 86 ft wide.

Who owns E-470 EB over Happy Canyon Creek?

It is owned by the Local Toll Authority.