US Bridges

Elliot Road over Mokelumne River

Good

San Joaquin County, California · 1.0 MI S Peltier RD · Structure no. 29C0035

Built
1955
70 years old
Condition
Good
inspected January 2024
Type
Girder and Floorbeam System
Steel
Length
348 ft
2 main spans
Daily traffic
2,513
2013 count
Owner
County
County Highway Agency

About this bridge

Elliot Road over Mokelumne River is a steel girder and floorbeam system carrying Elliot Road over Mokelumne River in San Joaquin County, California. It was built in 1955, so it is 70 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 2,513 vehicles a day, roughly 20% of them trucks, projected to reach 3,272 by 2042. The structure is 348 ft (106.1 m) long and 29 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesElliot Road
CrossesMokelumne River
Location1.0 MI S Peltier RD
RouteCounty Highway 0
Coordinates38.17745, -121.16506
Functional classRural Major Collector

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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating26.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+8 approach)
Design loadHS 20
Structure length348 ft (106.1 m)
Longest span75 ft (22.9 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,513 (2013)
Projected traffic3,272 by 2042
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Elliot Road over Mokelumne River built?

It was built in 1955, making it 70 years old in 2025.

What condition is Elliot Road over Mokelumne 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 January 2024.

How much traffic does Elliot Road over Mokelumne River carry?

About 2,513 vehicles per day (2013 count), of which roughly 20% are trucks.

How long is Elliot Road over Mokelumne River?

The structure is 348 ft (106.1 m) long with a longest span of 75 ft (22.9 m) and a deck 29 ft wide.

Who owns Elliot Road over Mokelumne River?

It is owned by the County Highway Agency.