US Bridges

Interstate 505 SB over Sweeney Creek

Good

Solano County, California · 04-SOL-505-R5.20 · Structure no. 23 0029L

Built
1946
79 years old, rebuilt 1995
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
100 ft
5 main spans
Daily traffic
12,000
2009 count
Owner
State
State Highway Agency

About this bridge

Interstate 505 SB over Sweeney Creek is a concrete continuous slab carrying Interstate 505 SB over Sweeney Creek in Solano County, California. It was built in 1946 and reconstructed in 1995, so it is 79 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,000 vehicles a day, roughly 14% of them trucks, projected to reach 19,175 by 2046. The structure is 100 ft (30.5 m) long and 46 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesInterstate 505 SB
CrossesSweeney Creek
Location04-SOL-505-R5.20
RouteInterstate 505
Coordinates38.44781, -121.94253
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.1 US tons
Inventory rating27.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 15
Structure length100 ft (30.5 m)
Longest span28 ft (8.5 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,000 (2009)
Projected traffic19,175 by 2046
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Interstate 505 SB over Sweeney Creek built?

It was built in 1946, making it 79 years old in 2025. It was reconstructed in 1995.

What condition is Interstate 505 SB over Sweeney Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does Interstate 505 SB over Sweeney Creek carry?

About 12,000 vehicles per day (2009 count), of which roughly 14% are trucks.

How long is Interstate 505 SB over Sweeney Creek?

The structure is 100 ft (30.5 m) long with a longest span of 28 ft (8.5 m) and a deck 46 ft wide.

Who owns Interstate 505 SB over Sweeney Creek?

It is owned by the State Highway Agency.