US Bridges

Carpenter Road over Tuolumne River

Good

Stanislaus County, California · 0.1 MI N/O Hatch Road · Structure no. 38C0050

Built
1960
65 years old, rebuilt 2014
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
632 ft
7 main spans
Daily traffic
21,848
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

Carpenter Road over Tuolumne River is a concrete continuous box beam or girders - multiple carrying Carpenter Road over Tuolumne River in Stanislaus County, California. It was built in 1960 and reconstructed in 2014, so it is 65 years old, older 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 21,848 vehicles a day, roughly 12% of them trucks, projected to reach 25,000 by 2040. The structure is 632 ft (192.6 m) long and 70 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCarpenter Road
CrossesTuolumne River
Location0.1 MI N/O Hatch Road
RouteCity Street 0
Coordinates37.60816, -121.03033
Functional classUrban Other Principal Arterial

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20 + Mod
Structure length632 ft (192.6 m)
Longest span100 ft (30.5 m)
Deck width70 ft (21.3 m)
Roadway width42 ft (12.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,848 (2016)
Projected traffic25,000 by 2040
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Carpenter Road over Tuolumne River built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2014.

What condition is Carpenter Road over Tuolumne River 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 August 2023.

How much traffic does Carpenter Road over Tuolumne River carry?

About 21,848 vehicles per day (2016 count), of which roughly 12% are trucks.

How long is Carpenter Road over Tuolumne River?

The structure is 632 ft (192.6 m) long with a longest span of 100 ft (30.5 m) and a deck 70 ft wide.

Who owns Carpenter Road over Tuolumne River?

It is owned by the City or Municipal Highway Agency.