US Bridges

Dutton Meadow over Colgan CR Fld Cntrl Chnl

Good

Sonoma County, California · Near Bellevue Ave. · Structure no. 20C0281

Built
1964
61 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
50 ft
2 main spans
Daily traffic
300
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Dutton Meadow over Colgan CR Fld Cntrl Chnl is a concrete continuous slab carrying Dutton Meadow over Colgan CR Fld Cntrl Chnl in Sonoma County, California. It was built in 1964, so it is 61 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 300 vehicles a day, roughly 1% of them trucks, projected to reach 366 by 2045. The structure is 50 ft (15.2 m) long and 41 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesDutton Meadow
CrossesColgan CR Fld Cntrl Chnl
LocationNear Bellevue Ave.
RouteCounty Highway 0
Coordinates38.40204, -122.72938
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating63.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span24 ft (7.3 m)
Deck width41 ft (12.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2019)
Projected traffic366 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Dutton Meadow over Colgan CR Fld Cntrl Chnl built?

It was built in 1964, making it 61 years old in 2025.

What condition is Dutton Meadow over Colgan CR Fld Cntrl Chnl 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 June 2024.

How much traffic does Dutton Meadow over Colgan CR Fld Cntrl Chnl carry?

About 300 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Dutton Meadow over Colgan CR Fld Cntrl Chnl?

The structure is 50 ft (15.2 m) long with a longest span of 24 ft (7.3 m) and a deck 41 ft wide.

Who owns Dutton Meadow over Colgan CR Fld Cntrl Chnl?

It is owned by the City or Municipal Highway Agency.