US Bridges

E-470 SB over Second Creek

Good

Adams County, Colorado · 37.07 MI from I25 · Structure no. E-470-37.07B

Built
2002
23 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
204 ft
2 main spans
Daily traffic
20,682
2018 count
Owner
Toll Authority
Local Toll Authority

About this bridge

E-470 SB over Second Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying E-470 SB over Second Creek in Adams County, Colorado. It was built in 2002, so it is 23 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 20,682 vehicles a day, roughly 6% of them trucks, projected to reach 36,813 by 2038. The structure is 204 ft (62.3 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesE-470 SB
CrossesSecond Creek
Location37.07 MI from I25
Coordinates39.92852, -104.83363
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.3 US tons
Inventory rating26.1 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length204 ft (62.3 m)
Longest span98 ft (30 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,682 (2018)
Projected traffic36,813 by 2038
Trucks6%
Lanes on structure2
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 SB over Second Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is E-470 SB over Second 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 July 2023.

How much traffic does E-470 SB over Second Creek carry?

About 20,682 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is E-470 SB over Second Creek?

The structure is 204 ft (62.3 m) long with a longest span of 98 ft (30 m) and a deck 42 ft wide.

Who owns E-470 SB over Second Creek?

It is owned by the Local Toll Authority.