US Bridges

Gamay Street over Steel Creek

Fair

Sonoma County, California · North of Jennings Ave · Structure no. 20C0561

Built
1989
36 years old
Condition
Fair
inspected August 2022
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
500
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

Gamay Street over Steel Creek is a concrete continuous culvert carrying Gamay Street over Steel Creek in Sonoma County, California. It was built in 1989, so it is 36 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 500 vehicles a day, roughly 3% of them trucks, projected to reach 738 by 2044. The structure is 22 ft (6.7 m) long and 54 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesGamay Street
CrossesSteel Creek
LocationNorth of Jennings Ave
RouteCity Street 0
Coordinates38.45099, -122.75671
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span11 ft (3.3 m)
Deck width54 ft (16.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2011)
Projected traffic738 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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 Gamay Street over Steel Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Gamay Street over Steel 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 August 2022.

How much traffic does Gamay Street over Steel Creek carry?

About 500 vehicles per day (2011 count), of which roughly 3% are trucks.

How long is Gamay Street over Steel Creek?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.3 m) and a deck 54 ft wide.

Who owns Gamay Street over Steel Creek?

It is owned by the City or Municipal Highway Agency.