US Bridges

Seventh Street over Tuolumne River

FairPosted for load

Stanislaus County, California · South Tuolumne Blvd · Structure no. 38C0023

Built
1916
109 years old
Condition
Fair
inspected November 2024
Type
Arch - Deck
Concrete Continuous
Length
1,170 ft
14 main spans
Daily traffic
16,815
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

Seventh Street over Tuolumne River is a concrete continuous arch - deck carrying Seventh Street over Tuolumne River in Stanislaus County, California. It was built in 1916, so it is 109 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 16,815 vehicles a day, roughly 12% of them trucks, projected to reach 18,363 by 2042. The structure is 1,170 ft (356.6 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSeventh Street
CrossesTuolumne River
LocationSouth Tuolumne Blvd
RouteCity Street 0
Coordinates37.62589, -120.99335
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating12.1 US tons
Inventory rating7.2 US tons

Structure

Structure typeArch - Deck
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans14
Design loadUnknown
Structure length1,170 ft (356.6 m)
Longest span101 ft (30.8 m)
Deck width36 ft (10.9 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,815 (2016)
Projected traffic18,363 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

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

Frequently asked questions

When was Seventh Street over Tuolumne River built?

It was built in 1916, making it 109 years old in 2025.

What condition is Seventh Street over Tuolumne River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.

How much traffic does Seventh Street over Tuolumne River carry?

About 16,815 vehicles per day (2016 count), of which roughly 12% are trucks.

How long is Seventh Street over Tuolumne River?

The structure is 1,170 ft (356.6 m) long with a longest span of 101 ft (30.8 m) and a deck 36 ft wide.

Who owns Seventh Street over Tuolumne River?

It is owned by the City or Municipal Highway Agency.