US Bridges

Ramp to I 25 Nbnd over County Line Road R

Good

Arapahoe County, Colorado · .85 MI N of JCT I-25/470 · Structure no. F-17-JY

Built
1991
34 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
181 ft
2 main spans
Daily traffic
85,500
2020 count
Owner
State
State Highway Agency

About this bridge

Ramp to I 25 Nbnd over County Line Road R is a prestressed concrete continuous stringer/multi-beam or girder carrying Ramp to I 25 Nbnd over County Line Road R in Arapahoe County, Colorado. It was built in 1991, so it is 34 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 85,500 vehicles a day, roughly 7% of them trucks, projected to reach 116,280 by 2040. The structure is 181 ft (55.2 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRamp to I 25 Nbnd
CrossesCounty Line Road R
Location.85 MI N of JCT I-25/470
RouteInterstate 25A
CountyArapahoe County
StateColorado
Coordinates39.56611, -104.87183
Functional classUrban Principal Arterial - Interstate

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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.3 US tons
Inventory rating57.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length181 ft (55.2 m)
Longest span92 ft (28.1 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic85,500 (2020)
Projected traffic116,280 by 2040
Trucks7%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 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 Ramp to I 25 Nbnd over County Line Road R built?

It was built in 1991, making it 34 years old in 2025.

What condition is Ramp to I 25 Nbnd over County Line Road R 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 December 2023.

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

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

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

The structure is 181 ft (55.2 m) long with a longest span of 92 ft (28.1 m) and a deck 30 ft wide.

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

It is owned by the State Highway Agency.