US Bridges

E-470 NB over Smith Road & UPRR

Fair

Adams County, Colorado · 21.01 MI from I25 · Structure no. E-470-21.01A

Built
1997
28 years old, rebuilt 2020
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
360 ft
3 main spans
Daily traffic
19,200
2018 count
Owner
Private
Private (other than railroad)

About this bridge

E-470 NB over Smith Road & UPRR is a prestressed concrete continuous stringer/multi-beam or girder carrying E-470 NB over Smith Road & UPRR in Adams 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 19,200 vehicles a day, roughly 6% of them trucks, projected to reach 34,176 by 2038. The structure is 360 ft (109.7 m) long and 74 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesE-470 NB
CrossesSmith Road & UPRR
Location21.01 MI from I25
CountyAdams County
StateColorado
Coordinates39.74823, -104.71653
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.5 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length360 ft (109.7 m)
Longest span129 ft (39.3 m)
Deck width74 ft (22.6 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,200 (2018)
Projected traffic34,176 by 2038
Trucks6%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerPrivate (other than railroad)
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 Smith Road & UPRR 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 Smith Road & UPRR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does E-470 NB over Smith Road & UPRR carry?

About 19,200 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is E-470 NB over Smith Road & UPRR?

The structure is 360 ft (109.7 m) long with a longest span of 129 ft (39.3 m) and a deck 74 ft wide.

Who owns E-470 NB over Smith Road & UPRR?

It is owned by the Private (other than railroad) and maintained by the Local Toll Authority.