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I 25 Nbnd Ramp over Ramp to County Line Rd R

Douglas County, Colorado · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

I 25 Nbnd Ramp over Ramp to County Line Rd R in Douglas County, Colorado, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1983 and reconstructed in 1991, making it 42 years old at the 2025 inventory.
It carries about 85,500 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 119 of the 264 inventoried bridges in Douglas County rated fair (45.1%); 6 (2.3%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Continuous prestressed concrete stringer or multi-beam girder
Length	about 229 ft
Location	Nbnd Ramp N. of Jct 470
NBI structure number	F-17-ID
Condition class	Fair

Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.

Bridge	Built	Vehicles/day	Condition
I 25 Ml over Happy Canyon Creek	1999	116,000	Fair
I 25 Ml over Ridgegate Pkwy	2008	116,000	Fair
I 25 Ml over Clydesdale Ln	1999	116,000	Fair
SH 470 Ml over Willow Creek	1984	95,000	Fair
C470 EB Ramp to 25 over Lrt	2005	85,500	Fair
Wolfensberger Rd over East Plum Creek	2003	82,000	Fair