US Bridges

E-470 SB over Ramp B

Good

Arapahoe County, Colorado · 20.13 MI from I25 · Structure no. E-470-20.13B

Built
2006
19 years old, rebuilt 2020
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
149 ft
1 main span
Daily traffic
18,529
2018 count
Owner
Toll Authority
Local Toll Authority

About this bridge

E-470 SB over Ramp B is a prestressed concrete continuous stringer/multi-beam or girder carrying E-470 SB over Ramp B in Arapahoe 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 18,529 vehicles a day, roughly 6% of them trucks, projected to reach 32,981 by 2038. The structure is 149 ft (45.3 m) long and 62 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesE-470 SB
CrossesRamp B
Location20.13 MI from I25
Coordinates39.73469, -104.71781
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.3 US tons
Inventory rating38.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length149 ft (45.3 m)
Longest span145 ft (44.1 m)
Deck width62 ft (19 m)
Roadway width60 ft (18.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,529 (2018)
Projected traffic32,981 by 2038
Trucks6%
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 Ramp B 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 Ramp B 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 SB over Ramp B carry?

About 18,529 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is E-470 SB over Ramp B?

The structure is 149 ft (45.3 m) long with a longest span of 145 ft (44.1 m) and a deck 62 ft wide.

Who owns E-470 SB over Ramp B?

It is owned by the Local Toll Authority.