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I-82 over SR 821 Whipple Wasteway

Kittitas County, Washington · rated Fair in the 2025 National Bridge Inventory

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

I-82 over SR 821 Whipple Wasteway in Kittitas County, Washington, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1970, making it 55 years old at the 2025 inventory.
It carries about 9,791 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 145 of the 313 inventoried bridges in Kittitas County rated fair (46.3%); 35 (11.2%) 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 356 ft
Location	3.2 E Jct I-90
NBI structure number	0008672B0000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-90 over Coal Creek	1928	18,069	Fair
I-90 over Coal Creek	1956	18,069	Poor
I-90 over Animal Crossing	2010	18,069	Good
I-90 over Animal Crossing	2012	18,069	Good
I-90 over Gold Creek	2011	18,069	Fair
I-90 over Gold Creek	2012	18,069	Good