Tuolumne County, CA

128 public highway bridges

Tuolumne County Bridge Snapshot

Tuolumne County, California contains 128 public highway bridges in the FHWA National Bridge Inventory. Roughly 34.4% are rated “Good,” 53.9% “Fair,” 7% “Poor,” and 7% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

128
Total Bridges
34.4%
Good
7%
Poor
7%
Structurally Deficient

Condition Distribution

Good
34.4% (44)
Fair
53.9% (69)
Poor
7% (9)
SD
7% (9)

All Bridges (128)

JAMESTOWN RD

Good

Over: WOODS CREEK

0.4 MI NE/O SR49 & 108, Tuolumne, CA

Built 2001 Load: 32.4 t ADT: 2,200

PASEO DE LOS PORTA

Good

Over: SULLIVAN CREEK

0.1M N OF PHOENIX LAKE RD, Tuolumne, CA

Built 1996 Load: 32.4 t ADT: 1,915

HARDIN FLAT ROAD

Good

Over: SOUTH FK TUOLUMNE RIVER

E OF YOSEMITE LAKES ROAD, Tuolumne, CA

Built 2019 Load: 32.4 t ADT: 100

BUCHANAN RD (1N01)

Good

Over: NORTH FK TUOLUMNE RIVER

FISH HATCHERY RD (1N04), Tuolumne, CA

Built 2017 Load: 32.4 t ADT: 630

BIG CREEK SHAFT RD

Good

Over: BIG CREEK

0.4 MI N OF SR 120, Tuolumne, CA

Built 2022 Load: 32.4 t ADT: 105

STATE ROUTE 120

Good

Over: HILLSIDE

10-TUO-120-R44.84, Tuolumne, CA

Built 1970 Load: 32.6 t ADT: 3,650

STATE ROUTE 120 EB

Good

Over: PRIVATE ACCESS ROAD

10-TUO-120-R5.98, Tuolumne, CA

Built 1976 Load: 35.6 t ADT: 6,100

STATE ROUTE 108

Good

Over: EAGLE CREEK

10-TUO-108-53.03, Tuolumne, CA

Built 1963 Load: 36.6 t ADT: 800

STATE ROUTE 120 WB

Good

Over: PRIVATE ACCESS ROAD

10-TUO-120-R5.98, Tuolumne, CA

Built 1976 Load: 37.3 t ADT: 6,100

WINDING ROAD

Good

Over: SF STANISLAUS RIVER

NO DATA ENTERED, Tuolumne, CA

Built 2015 Load: 37.6 t ADT: 50

STATE ROUTE 120

Good

Over: BIG CREEK

10-TUO-120-R37.78, Tuolumne, CA

Built 1977 Load: 38.9 t ADT: 3,800

WINDING ROAD

Good

Over: NIAGARA CREEK

NO DATA ENTERED, Tuolumne, CA

Built 2010 Load: 38.9 t ADT: 50

IRR BIA RTE 133

Good

Over: TURNBACK CREEK

1.48KM UP MIWU FROM INTER, Tuolumne, CA

Built 2020 Load: 42.1 t ADT: 30

STATE ROUTE 49

Good

Over: JACKASS GULCH

10-TUO-049-R2.99, Tuolumne, CA

Built 1975 Load: 45.4 t ADT: 765

OLD WARDS FERRY RD

Good

Over: SULLIVAN CREEK

0.8 MI S HWY 108, Tuolumne, CA

Built 1977 Load: 45.4 t ADT: 810

YOSEMITE RD

Good

Over: TURNBACK CREEK

0.3 MI W/O OAK ST, Tuolumne, CA

Built 1980 Load: 45.7 t ADT: 905

JACKSONVILLE RD

Good

Over: SULLIVAN CREEK

6.9 MI N/O SR 120, Tuolumne, CA

Built 1970 Load: 48.9 t ADT: 1,567

STATE ROUTE 49

Good

Over: SONORA CREEK

10-TUO-049-17.80-SRA, Tuolumne, CA

Built 1947 Load: 49.6 t ADT: 11,500

LIME KILN RD

Good

Over: SULLIVAN CREEK

0.9 MI S OF CAMPO SECO RD, Tuolumne, CA

Built 1945 Load: 71.0 t ADT: 1,800

WINDING ROAD

Poor

Over: UPPER HUNTER CREEK

NO DATA ENTERED, Tuolumne, CA

Built 1969 ADT: 50

WINDING ROAD

Poor

Over: MILL CREEK

NO DATA ENTERED, Tuolumne, CA

Built 1969 ADT: 50

ITALIAN BAR RD

Poor

Over: ROSE CREEK

10.7 MI NE BIG HILL ROAD, Tuolumne, CA

Built 1925 Load: 15.6 t ADT: 20

STATE ROUTE 120

Poor

Over: CHINESE CREEK

10-TUO-120-14.73, Tuolumne, CA

Built 1914 Load: 16.2 t ADT: 2,800

SR 108

Poor

Over: MONO WAY

10-TUO-108-R2.20, Tuolumne, CA

Built 2004 Load: 32.4 t ADT: 17,450

PARROTTS FERRY RD

Poor

Over: NEW MELONES RESERVOIR

4 MILES SOUTH OF ROUTE 4, Tuolumne, CA

Built 1978 Load: 32.4 t ADT: 2,500

MONO WAY

Poor

Over: SULLIVAN CREEK

0.5 MI E OF HWY 108, Tuolumne, CA

Built 1991 Load: 32.4 t ADT: 25,060

WINDING ROAD

Structurally Deficient

Over: STANISLAUS RIVER

NO DATA ENTERED, Tuolumne, CA

Built 1926 ADT: 50

WINDING ROAD

Structurally Deficient

Over: BLUE CANYON CREEK

NO DATA ENTERED, Tuolumne, CA

Built 1968 ADT: 50

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial