US Bridges

E-470 NB over Coal Creek

Good

Arapahoe County, Colorado · 18.44 MI from I25 · Structure no. E-470-18.44A

Built
1997
28 years old, rebuilt 2020
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
392 ft
3 main spans
Daily traffic
19,715
2018 count
Owner
Toll Authority
Local Toll Authority

About this bridge

E-470 NB over Coal Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying E-470 NB over Coal Creek in Arapahoe County, Colorado. It was built in 1997 and reconstructed in 2020, so it is 28 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 19,715 vehicles a day, roughly 6% of them trucks, projected to reach 43,373 by 2038. The structure is 392 ft (119.6 m) long and 74 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesE-470 NB
CrossesCoal Creek
Location18.44 MI from I25
Coordinates39.71208, -104.72312
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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating48.6 US tons
Inventory rating37.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length392 ft (119.6 m)
Longest span125 ft (38.2 m)
Deck width74 ft (22.6 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,715 (2018)
Projected traffic43,373 by 2038
Trucks6%
Lanes on structure3
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 NB over Coal Creek built?

It was built in 1997, making it 28 years old in 2025. It was reconstructed in 2020.

What condition is E-470 NB over Coal 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 2024.

How much traffic does E-470 NB over Coal Creek carry?

About 19,715 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is E-470 NB over Coal Creek?

The structure is 392 ft (119.6 m) long with a longest span of 125 ft (38.2 m) and a deck 74 ft wide.

Who owns E-470 NB over Coal Creek?

It is owned by the Local Toll Authority.