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Every bridge in Mariposa County, California

Name: Every bridge in Mariposa County, California
Creator: Bridge Report Card
License: https://creativecommons.org/publicdomain/zero/1.0/

109 inventoried bridges, busiest first

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

Mariposa County, California, has 109 bridges in the 2025 National Bridge Inventory: 20 rated good, 77 fair, and 12 poor (as of August 20, 2026).
This index lists every one of them, busiest first; each links to its own condition record.

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
State Route 140 over Miles Creek	1916	4,650	Fair
State Route 140 over Miles Creek	1928	4,650	Fair
State Route 140 over Miles Creek	1928	4,650	Poor
State Route 140 over Miles Creek	1928	4,650	Fair
State Route 140 over Miles Creek	1916	4,650	Fair
State Route 49 over Delong Creek	1948	3,725	Fair
State Route 49 over E Fork Chowchilla River	1972	3,725	Good
State Route 49 over Oliver Creek	1948	3,725	Fair
State Route 49 over Peg Leg Creek	1960	3,725	Fair
State Route 49 over W Fork Chowchilla River	1968	3,725	Fair
Valley Loop Road over Merced River	1928	3,425	Fair
El Capitan Crossov over Merced River	1933	3,416	Poor
Sentinel Bridge Ro over Merced River	1994	3,416	Fair
Valley Loop Road over Merced River	1933	3,416	Fair
Valley Loop Road over Yosemite Creek	1922	3,416	Fair
Big Oak Flat Road over Cascade Creek	1939	2,530	Fair
Big Oak Flat Road over Tamarack Creek	1939	2,530	Fair
Big Oak Flat Road over Wildcat Creek	1939	2,530	Fair
State Highway 41 over South Fork Merced River	2007	2,403	Fair
State Route 41 over Big Creek	1931	2,300	Fair
State Route 140 over Bear Creek	1957	2,125	Good
State Route 140 over Bear Creek	1926	2,125	Fair
State Route 140 over Bear Creek	1926	2,125	Fair
El Portal Road over East Fork Cascade Creek	1985	2,080	Fair
El Portal Road over Lower Cascade Creek over	2000	2,080	Fair
El Portal Road over Wildcat Creek	1985	2,080	Fair
Foresta Road over Merced River	1960	2,080	Fair
Tioga Road over Yosemite Creek	1960	2,041	Fair
Glacier Point Road over Bridalveil Creek	1933	1,517	Fair
Darrah Road over West Fk Chowchilla River	2023	1,460	Good
State Route 140 over Cold Canyon Creek	1957	1,400	Good
State Route 140 over Crane Creek	1957	1,400	Good
State Route 140 over Merced River	1926	1,400	Good
State Route 140 over Merced River	2008	1,400	Fair
State Route 140 over Merced River	2008	1,400	Fair
State Route 140 over Slate Gulch	1926	1,400	Poor
State Route 140 over South Fork Merced River	1926	1,400	Poor
State Route 140 over Sweetwater Creek	1926	1,400	Poor
State Route 132 over Blacks Creek	1964	1,240	Good
Route 132 over Hayward Creek	2005	1,150	Fair
State Route 132 over Hayward Creek	2005	1,150	Fair
Greeley Hill Road over Bean Creek	1956	1,120	Fair
6TH Street over Mariposa Creek	1950	1,080	Poor
Greeley Hill Road over Cuneo Creek	1961	1,040	Good
Triangle Road over Summit Creek	1935	960	Fair
Old Hwy over Mariposa Creek	1920	840	Fair
State Route 49 over Maxwell Creek	1963	615	Fair
State Route 49 over Merced River	1966	615	Fair
Buck Meadows Road over Jordan Creek	1961	610	Fair
Buck Meadows Road over Moore Creek	1937	610	Fair
Greeley Hill Road over Smith Creek	1956	610	Fair
Hornitos Road over Burns Creek	1956	560	Fair
School House Road over Owens Creek	1936	380	Fair
Triangle Road over Snow Creek	1935	360	Poor
Hornitos Road over Bear Creek	1948	350	Fair
Colorado Road over Bear Creek	1966	330	Good
Buckeye Road over Buckeye Creek	1960	200	Fair
Buckeye Road over Mariposa Creek	1947	200	Poor
Bear Valley Road over Burns Creek	1961	190	Fair
Bear Valley Road over Burns Creek	1951	190	Good
Bear Valley Road over Burns Creek	1961	190	Fair
Bear Valley Road over Burns Creek	1961	190	Fair
Bear Valley Road over No Name Creek	1961	190	Fair
Old Yosemite Road over North Fork Merced River	1950	190	Fair
Usona Road over Middle Fk Chowchilla Riv	1970	190	Poor
Bondurant Mine Rd over Bean Creek	2016	180	Good
Dogtown Road over Bean Creek	2016	180	Good
Holtzel Road over Dutch Creek	1955	180	Fair
Old Highway Road over Agua Fria Creek	1919	180	Fair
Hornitos Road over Corbet Creek	1947	150	Good
Hornitos Road over Turner Creek	1956	150	Fair
Incline Road over Dry Creek	1970	150	Fair
Incline Road over Moss Canyon	1965	150	Fair
Indian Peak Road over M Fork Chowchilla River	1993	140	Good
Hornitos Road over Eldorado Creek	1956	130	Fair
Oak Road over Bear Creek	1985	130	Fair
Old Toll Road over Bear Creek	1948	130	Poor
Dogtown Road over Maxwell Creek	1958	120	Good
Dogtown Road over Maxwell Creek	1944	120	Fair
Indian Peak Road over West Fk Chowchilla River	1978	120	Good
18058: Merced Rive over Merced River	1927	100	Fair
Bull Creek Road over Bull Creek	1950	100	Fair
Curry Stables Road over Merced River	1928	100	Fair
Old Highway over Owens Creek	1920	100	Fair
Ben Hur Road over Chapman Creek	1967	90	Fair
Ferry Road over Maxwell Creek	1987	90	Fair
Happy Isles Loop over Merced River	1929	50	Fair
No Data Entered over No Data Entered	1969	50	Fair
Oak Grove Road over Striped Rock Creek	1912	50	Good
Sherlock Road over Saxon Creek	1972	50	Good
Winding Road over Middle Miami Creek	1965	50	Poor
Indian Gulch Road over Bear Creek	2021	30	Good
Chilnualna Falls R over Chilnualna Creek	1996	25	Fair
Old Tioga Road over Yosemite Creek	1980	25	Fair
Chowchilla Road over Big Creek	1940	20	Poor
White Rock Road over Deadman Creek	1960	20	Fair
White Rock Road over Deadman Creek	1992	20	Fair
White Rock Road over Mariposa Creek	1968	20	Fair
Foresta Road over Crane Creek	1959	10	Fair
Foresta Road over Crane Creek	2013	10	Good
Mary Harrison Mine over Maxwell Creek	1926	10	Fair
Slaughterhouse Rd over Stockton Creek	1974	8	Fair
Trail over Tenaya Creek	1928	1	Fair

Source: FHWA National Bridge Inventory, 2025.

Mariposa County bridge conditions · California bridges by county.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.