US Bridges

Shady Willow Lane over Sand Creek

Fair

Contra Costa County, California · 0.3 MI N Sand Creek RD · Structure no. 28C0256

Built
2007
18 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
77 ft
1 main span
Daily traffic
3,700
2007 count
Owner
City
City or Municipal Highway Agency

About this bridge

Shady Willow Lane over Sand Creek is a prestressed concrete stringer/multi-beam or girder carrying Shady Willow Lane over Sand Creek in Contra Costa County, California. It was built in 2007, so it is 18 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 6 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 3,700 vehicles a day, roughly 1% of them trucks, projected to reach 5,525 by 2047. The structure is 77 ft (23.5 m) long and 85 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesShady Willow Lane
CrossesSand Creek
Location0.3 MI N Sand Creek RD
RouteCity Street 0
Coordinates37.94742, -121.73527
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length77 ft (23.5 m)
Longest span73 ft (22.1 m)
Deck width85 ft (25.9 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,700 (2007)
Projected traffic5,525 by 2047
Trucks1%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Shady Willow Lane over Sand Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Shady Willow Lane over Sand 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 January 2025.

How much traffic does Shady Willow Lane over Sand Creek carry?

About 3,700 vehicles per day (2007 count), of which roughly 1% are trucks.

How long is Shady Willow Lane over Sand Creek?

The structure is 77 ft (23.5 m) long with a longest span of 73 ft (22.1 m) and a deck 85 ft wide.

Who owns Shady Willow Lane over Sand Creek?

It is owned by the City or Municipal Highway Agency.