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3RD Avenue over Adonea Tributary

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

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

3RD Avenue over Adonea Tributary in Arapahoe County, Colorado, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 2005, making it 20 years old at the 2025 inventory.
It carries about 966 vehicles a day (traffic count year 2021).
Its listed owner is a city or municipal highway agency.
It is one of 267 of the 392 inventoried bridges in Arapahoe County rated fair (68.1%); 21 (5.4%) 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

Component	Rating (2025)	FHWA scale meaning
Culvert	6	Satisfactory condition

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

Bridge	Built	Vehicles/day	Condition
I 25 Ml over SH 88 Ml W./belleview	1958	246,000	Fair
I 25 Ml over Orchard Road	1958	233,000	Fair
I 25 Ml over Dry Creek Rd	1987	212,000	Fair
I 25 Ml over SH 88 Ml East	2017	212,000	Good
I 25 Ml over County Line Road	1958	171,000	Fair
I 225 Ml over Tollgate Creek	1965	140,000	Good