US Bridges

State Route 120 WB over Private Access Road

Good

Tuolumne County, California · 10-TUO-120-R5.98 · Structure no. 32 0056L

Built
1976
49 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
89 ft
1 main span
Daily traffic
6,100
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 120 WB over Private Access Road is a prestressed concrete box beam or girders - multiple carrying State Route 120 WB over Private Access Road in Tuolumne County, California. It was built in 1976, so it is 49 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,100 vehicles a day, projected to reach 9,744 by 2041. The structure is 89 ft (27.1 m) long and 41 ft wide. If it were closed, the detour would be 37.3 mi (60 km).

CarriesState Route 120 WB
CrossesPrivate Access Road
Location10-TUO-120-R5.98
RouteState Highway 120
Coordinates37.84454, -120.54653
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating41.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length89 ft (27.1 m)
Longest span87 ft (26.5 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,100 (2009)
Projected traffic9,744 by 2041
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed37.3 mi (60 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 120 WB over Private Access Road built?

It was built in 1976, making it 49 years old in 2025.

What condition is State Route 120 WB over Private Access Road in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does State Route 120 WB over Private Access Road carry?

About 6,100 vehicles per day (2009 count).

How long is State Route 120 WB over Private Access Road?

The structure is 89 ft (27.1 m) long with a longest span of 87 ft (26.5 m) and a deck 41 ft wide.

Who owns State Route 120 WB over Private Access Road?

It is owned by the State Highway Agency.