US Bridges

Hartley RD over Sweeney Creek

Fair

Solano County, California · 0.2 MI S Cole RD · Structure no. 23C0023

Built
1957
68 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete Continuous
Length
107 ft
4 main spans
Daily traffic
623
2004 count
Owner
County
County Highway Agency

About this bridge

Hartley RD over Sweeney Creek is a concrete continuous slab carrying Hartley RD over Sweeney Creek in Solano County, California. It was built in 1957, so it is 68 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.

It carries about 623 vehicles a day, roughly 6% of them trucks, projected to reach 1,472 by 2041. The structure is 107 ft (32.6 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesHartley RD
CrossesSweeney Creek
Location0.2 MI S Cole RD
RouteCounty Highway 0
CountySolano County
StateCalifornia
Coordinates38.44739, -121.94302
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating28.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span26 ft (7.9 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic623 (2004)
Projected traffic1,472 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Hartley RD over Sweeney Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is Hartley RD over Sweeney 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 March 2023.

How much traffic does Hartley RD over Sweeney Creek carry?

About 623 vehicles per day (2004 count), of which roughly 6% are trucks.

How long is Hartley RD over Sweeney Creek?

The structure is 107 ft (32.6 m) long with a longest span of 26 ft (7.9 m) and a deck 30 ft wide.

Who owns Hartley RD over Sweeney Creek?

It is owned by the County Highway Agency.