US Bridges

Vaca Valley Pkwy over Interstate 505

Fair

Solano County, California · 04-SOL-505-R1.45-VAC · Structure no. 23 0172

Built
1974
51 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
184 ft
2 main spans
Daily traffic
3,530
1998 count
Owner
State
State Highway Agency

About this bridge

Vaca Valley Pkwy over Interstate 505 is a concrete continuous box beam or girders - multiple carrying Vaca Valley Pkwy over Interstate 505 in Solano County, California. It was built in 1974, so it is 51 years old, younger 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 3,530 vehicles a day, roughly 15% of them trucks, projected to reach 7,582 by 2042. The structure is 184 ft (56.1 m) long and 42 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesVaca Valley Pkwy
CrossesInterstate 505
Location04-SOL-505-R1.45-VAC
RouteCounty Highway 0
Coordinates38.39399, -121.95014
Functional classUrban 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length184 ft (56.1 m)
Longest span92 ft (28 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,530 (1998)
Projected traffic7,582 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Vaca Valley Pkwy over Interstate 505 built?

It was built in 1974, making it 51 years old in 2025.

What condition is Vaca Valley Pkwy over Interstate 505 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 April 2024.

How much traffic does Vaca Valley Pkwy over Interstate 505 carry?

About 3,530 vehicles per day (1998 count), of which roughly 15% are trucks.

How long is Vaca Valley Pkwy over Interstate 505?

The structure is 184 ft (56.1 m) long with a longest span of 92 ft (28 m) and a deck 42 ft wide.

Who owns Vaca Valley Pkwy over Interstate 505?

It is owned by the State Highway Agency.