US Bridges

E-470 SB over I-70

Good

Adams County, Colorado · 20.50 MI from I25 · Structure no. E-470-20.50B

Built
2006
19 years old, rebuilt 2020
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
401 ft
4 main spans
Daily traffic
18,260
2018 count
Owner
Toll Authority
Local Toll Authority

About this bridge

E-470 SB over I-70 is a prestressed concrete continuous stringer/multi-beam or girder carrying E-470 SB over I-70 in Adams County, Colorado. It was built in 2006 and reconstructed in 2020, so it is 19 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 18,260 vehicles a day, projected to reach 31,042 by 2038. The structure is 401 ft (122.3 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesE-470 SB
CrossesI-70
Location20.50 MI from I25
Coordinates39.74019, -104.71889
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.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.9 US tons
Inventory rating19.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans4
Design loadHS 25 or greater
Structure length401 ft (122.3 m)
Longest span107 ft (32.6 m)
Deck width65 ft (19.7 m)
Roadway width62 ft (18.8 m)
Vertical clearance over deck21 ft (6.4 m)

Traffic and service

Average daily traffic18,260 (2018)
Projected traffic31,042 by 2038
Trucks0%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 SB over I-70 built?

It was built in 2006, making it 19 years old in 2025. It was reconstructed in 2020.

What condition is E-470 SB over I-70 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 SB over I-70 carry?

About 18,260 vehicles per day (2018 count).

How long is E-470 SB over I-70?

The structure is 401 ft (122.3 m) long with a longest span of 107 ft (32.6 m) and a deck 65 ft wide.

Who owns E-470 SB over I-70?

It is owned by the Local Toll Authority.