US Bridges

NB US 85 Off Ramp over Terrain

Fair

Douglas County, Colorado · US85 Nbnd Off Ramp · Structure no. CAS CASRKPWY-4

Built
2014
11 years old
Condition
Fair
inspected March 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
246 ft
2 main spans
Daily traffic
1,877
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

NB US 85 Off Ramp over Terrain is a prestressed concrete continuous stringer/multi-beam or girder carrying NB US 85 Off Ramp over Terrain in Douglas County, Colorado. It was built in 2014, so it is 11 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 1,877 vehicles a day, roughly 1% of them trucks, projected to reach 2,515 by 2042. The structure is 246 ft (75.1 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB US 85 Off Ramp
CrossesTerrain
LocationUS85 Nbnd Off Ramp
RouteU.S. Route 0
CountyDouglas County
StateColorado
Coordinates39.42018, -104.8872
Functional classUrban Other Principal Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating46.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length246 ft (75.1 m)
Longest span120 ft (36.6 m)
Deck width44 ft (13.3 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,877 (2022)
Projected traffic2,515 by 2042
Trucks1%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 US 85 Off Ramp over Terrain built?

It was built in 2014, making it 11 years old in 2025.

What condition is NB US 85 Off Ramp over Terrain 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 March 2025.

How much traffic does NB US 85 Off Ramp over Terrain carry?

About 1,877 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is NB US 85 Off Ramp over Terrain?

The structure is 246 ft (75.1 m) long with a longest span of 120 ft (36.6 m) and a deck 44 ft wide.

Who owns NB US 85 Off Ramp over Terrain?

It is owned by the Town or Township Highway Agency.