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Buckeye Road over Mariposa Creek

Mariposa County, California · rated Poor in the 2025 National Bridge Inventory

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

Buckeye Road over Mariposa Creek in Mariposa County, California, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 1947, making it 78 years old at the 2025 inventory.
It carries about 200 vehicles a day (traffic count year 2005).
Its listed owner is the county highway agency.
It is one of 12 of the 109 inventoried bridges in Mariposa County rated poor (11.0%); 12 (11.0%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 43 ft
Location	2.3 Mi S/o Old Hwy
NBI structure number	40C0036
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
State Route 140 over Mariposa Creek	1932	10,800	Fair
State Route 49 over Stockton Creek	1967	7,900	Fair
State Route 49 over Mariposa Creek	1942	6,600	Fair
State Route 140 over Miles Creek	1916	4,650	Fair
State Route 140 over Miles Creek	1929	4,650	Fair
State Route 140 over Miles Creek	1928	4,650	Fair