US Bridges

Midway Road over Sweeny Creek

Fair

Solano County, California · 0.45 MI E of I-80 · Structure no. 23C0090

Built
1970
55 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete Continuous
Length
92 ft
3 main spans
Daily traffic
5,000
2010 count
Owner
County
County Highway Agency

About this bridge

Midway Road over Sweeny Creek is a concrete continuous slab carrying Midway Road over Sweeny Creek in Solano County, California. It was built in 1970, so it is 55 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 5,000 vehicles a day, roughly 10% of them trucks, projected to reach 6,121 by 2041. The structure is 92 ft (28 m) long and 41 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMidway Road
CrossesSweeny Creek
Location0.45 MI E of I-80
RouteCounty Highway 0
CountySolano County
StateCalifornia
Coordinates38.41686, -121.88883
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
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating66 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length92 ft (28 m)
Longest span30 ft (9.1 m)
Deck width41 ft (12.5 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2010)
Projected traffic6,121 by 2041
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 Midway Road over Sweeny Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Midway Road over Sweeny 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 Midway Road over Sweeny Creek carry?

About 5,000 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is Midway Road over Sweeny Creek?

The structure is 92 ft (28 m) long with a longest span of 30 ft (9.1 m) and a deck 41 ft wide.

Who owns Midway Road over Sweeny Creek?

It is owned by the County Highway Agency.