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Limonite Avenue over Sunnyslope Storm Channel

Riverside County, California · rated Fair in the 2025 National Bridge Inventory

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

Limonite Avenue over Sunnyslope Storm Channel in Riverside County, California, 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 1965, making it 60 years old at the 2025 inventory.
It carries about 15,852 vehicles a day (traffic count year 2014).
Its listed owner is the county highway agency.
It is one of 462 of the 1,120 inventoried bridges in Riverside County rated fair (41.2%); 18 (1.6%) 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 California department of transportation.

Bridge	Built	Vehicles/day	Condition
State Route 91 over BNSF Ry Amtrak Metrolink	1970	270,000	Fair
State Route 91 over Serfas Drive	1970	269,000	Good
Route 91 over Buena Vista Avenue	1961	268,000	Fair
State Route 91 over E91-n71 Connctr (future)	1970	267,000	Good
State Route 91 over Coal Canyon	1970	264,000	Good
State Route 91 over State Route 71	1970	264,000	Good