US Bridges

Lone Tree RD over Lone Tree Creek

Fair

San Joaquin County, California · 0.3 MI W of Sta CO Line · Structure no. 29C0198

Built
1922
103 years old, rebuilt 1977
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
50 ft
3 main spans
Daily traffic
1,022
2013 count
Owner
County
County Highway Agency

About this bridge

Lone Tree RD over Lone Tree Creek is a concrete continuous slab carrying Lone Tree RD over Lone Tree Creek in San Joaquin County, California. It was built in 1922 and reconstructed in 1977, so it is 103 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,022 vehicles a day, roughly 10% of them trucks, projected to reach 1,109 by 2046. The structure is 50 ft (15.2 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLone Tree RD
CrossesLone Tree Creek
Location0.3 MI W of Sta CO Line
RouteCounty Highway 0
Coordinates37.82756, -120.92999
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating28.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length50 ft (15.2 m)
Longest span16 ft (5 m)
Deck width33 ft (10 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,022 (2013)
Projected traffic1,109 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Lone Tree RD over Lone Tree Creek built?

It was built in 1922, making it 103 years old in 2025. It was reconstructed in 1977.

What condition is Lone Tree RD over Lone Tree Creek 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 Lone Tree RD over Lone Tree Creek carry?

About 1,022 vehicles per day (2013 count), of which roughly 10% are trucks.

How long is Lone Tree RD over Lone Tree Creek?

The structure is 50 ft (15.2 m) long with a longest span of 16 ft (5 m) and a deck 33 ft wide.

Who owns Lone Tree RD over Lone Tree Creek?

It is owned by the County Highway Agency.