US Bridges

I 25 Nbnd Ramp over Ramp to County Line RD R

Fair

Douglas County, Colorado · Nbnd Ramp N. of JCT 470 · Structure no. F-17-ID

Built
1983
42 years old, rebuilt 1991
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
230 ft
3 main spans
Daily traffic
85,500
2020 count
Owner
State
State Highway Agency

About this bridge

I 25 Nbnd Ramp over Ramp to County Line RD R is a prestressed concrete continuous stringer/multi-beam or girder carrying I 25 Nbnd Ramp over Ramp to County Line RD R in Douglas County, Colorado. It was built in 1983 and reconstructed in 1991, so it is 42 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 85,500 vehicles a day, roughly 7% of them trucks, projected to reach 116,280 by 2040. The structure is 230 ft (70 m) long and 66 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI 25 Nbnd Ramp
CrossesRamp to County Line RD R
LocationNbnd Ramp N. of JCT 470
RouteInterstate 25A
CountyDouglas County
StateColorado
Coordinates39.55842, -104.8702
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length230 ft (70 m)
Longest span96 ft (29.2 m)
Deck width66 ft (20 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic85,500 (2020)
Projected traffic116,280 by 2040
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 I 25 Nbnd Ramp over Ramp to County Line RD R built?

It was built in 1983, making it 42 years old in 2025. It was reconstructed in 1991.

What condition is I 25 Nbnd Ramp over Ramp to County Line RD 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 July 2023.

How much traffic does I 25 Nbnd Ramp over Ramp to County Line RD R carry?

About 85,500 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is I 25 Nbnd Ramp over Ramp to County Line RD R?

The structure is 230 ft (70 m) long with a longest span of 96 ft (29.2 m) and a deck 66 ft wide.

Who owns I 25 Nbnd Ramp over Ramp to County Line RD R?

It is owned by the State Highway Agency.