US Bridges

NB Ramp to I70/I76 over Clear Creek R

Fair

Jefferson County, Colorado · In Wheatridge · Structure no. E-16-KB

Built
1980
45 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
177 ft
3 main spans
Daily traffic
59,000
2020 count
Owner
State
State Highway Agency

About this bridge

NB Ramp to I70/I76 over Clear Creek R is a steel continuous stringer/multi-beam or girder carrying NB Ramp to I70/I76 over Clear Creek R in Jefferson County, Colorado. It was built in 1980, so it is 45 years old, older 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 59,000 vehicles a day, roughly 10% of them trucks, projected to reach 70,210 by 2040. The structure is 177 ft (54.1 m) long and 39 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesNB Ramp to I70/I76
CrossesClear Creek R
LocationIn Wheatridge
RouteInterstate 70A
CountyJefferson County
StateColorado
Coordinates39.78425, -105.08101
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.3 US tons
Inventory rating27.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length177 ft (54.1 m)
Longest span69 ft (21.1 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59,000 (2020)
Projected traffic70,210 by 2040
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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 NB Ramp to I70/I76 over Clear Creek R built?

It was built in 1980, making it 45 years old in 2025.

What condition is NB Ramp to I70/I76 over Clear Creek R 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 December 2023.

How much traffic does NB Ramp to I70/I76 over Clear Creek R carry?

About 59,000 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is NB Ramp to I70/I76 over Clear Creek R?

The structure is 177 ft (54.1 m) long with a longest span of 69 ft (21.1 m) and a deck 39 ft wide.

Who owns NB Ramp to I70/I76 over Clear Creek R?

It is owned by the State Highway Agency.