US Bridges

Snyder Lane over Copeland Creek

Fair

Sonoma County, California · 0.5 MI N E. Cotati Ave · Structure no. 20C0199

Built
1960
65 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete Continuous
Length
50 ft
3 main spans
Daily traffic
3,124
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Snyder Lane over Copeland Creek is a concrete continuous culvert carrying Snyder Lane over Copeland Creek in Sonoma County, California. It was built in 1960, so it is 65 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 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 3,124 vehicles a day, roughly 1% of them trucks, projected to reach 5,524 by 2045. The structure is 50 ft (15.2 m) long and 71 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesSnyder Lane
CrossesCopeland Creek
Location0.5 MI N E. Cotati Ave
RouteCity Street 0
CountySonoma County
StateCalifornia
Coordinates38.34321, -122.68544
Functional classUrban Minor Arterial

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span15 ft (4.7 m)
Deck width71 ft (21.6 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,124 (2015)
Projected traffic5,524 by 2045
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Snyder Lane over Copeland Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Snyder Lane over Copeland 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 June 2023.

How much traffic does Snyder Lane over Copeland Creek carry?

About 3,124 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is Snyder Lane over Copeland Creek?

The structure is 50 ft (15.2 m) long with a longest span of 15 ft (4.7 m) and a deck 71 ft wide.

Who owns Snyder Lane over Copeland Creek?

It is owned by the City or Municipal Highway Agency.