US Bridges

Mankas Corner RD over Ledgewood Creek

Fair

Solano County, California · 0.5 MI E Suisun Valley RD · Structure no. 23C0048

Built
1935
90 years old, rebuilt 1960
Condition
Fair
inspected November 2023
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
2,634
2008 count
Owner
County
County Highway Agency

About this bridge

Mankas Corner RD over Ledgewood Creek is a concrete slab carrying Mankas Corner RD over Ledgewood Creek in Solano County, California. It was built in 1935 and reconstructed in 1960, so it is 90 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 2,634 vehicles a day, roughly 6% of them trucks, projected to reach 4,746 by 2043. The structure is 24 ft (7.3 m) long and 49 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesMankas Corner RD
CrossesLedgewood Creek
Location0.5 MI E Suisun Valley RD
RouteCounty Highway 0
CountySolano County
StateCalifornia
Coordinates38.28648, -122.11035
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.4 US tons
Inventory rating19 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width49 ft (14.8 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,634 (2008)
Projected traffic4,746 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Mankas Corner RD over Ledgewood Creek built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1960.

What condition is Mankas Corner RD over Ledgewood 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 2023.

How much traffic does Mankas Corner RD over Ledgewood Creek carry?

About 2,634 vehicles per day (2008 count), of which roughly 6% are trucks.

How long is Mankas Corner RD over Ledgewood Creek?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 49 ft wide.

Who owns Mankas Corner RD over Ledgewood Creek?

It is owned by the County Highway Agency.