US Bridges

Bellevue Ave over Colgan CR Fld Cntrl Chnl

Fair

Sonoma County, California · 0.3 MI E Stony Point RD · Structure no. 20C0282

Built
1964
61 years old, rebuilt 1994
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
83 ft
3 main spans
Daily traffic
400
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Bellevue Ave over Colgan CR Fld Cntrl Chnl is a concrete continuous slab carrying Bellevue Ave over Colgan CR Fld Cntrl Chnl in Sonoma County, California. It was built in 1964 and reconstructed in 1994, 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 fair condition with a lowest component rating of 5 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 400 vehicles a day, roughly 1% of them trucks, projected to reach 522 by 2044. The structure is 83 ft (25.3 m) long and 68 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesBellevue Ave
CrossesColgan CR Fld Cntrl Chnl
Location0.3 MI E Stony Point RD
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.4018, -122.73633
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length83 ft (25.3 m)
Longest span32 ft (9.8 m)
Deck width68 ft (20.6 m)
Roadway width54 ft (16.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2019)
Projected traffic522 by 2044
Trucks1%
Lanes on structure3
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 Bellevue Ave over Colgan CR Fld Cntrl Chnl built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1994.

What condition is Bellevue Ave over Colgan CR Fld Cntrl Chnl 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 2024.

How much traffic does Bellevue Ave over Colgan CR Fld Cntrl Chnl carry?

About 400 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Bellevue Ave over Colgan CR Fld Cntrl Chnl?

The structure is 83 ft (25.3 m) long with a longest span of 32 ft (9.8 m) and a deck 68 ft wide.

Who owns Bellevue Ave over Colgan CR Fld Cntrl Chnl?

It is owned by the City or Municipal Highway Agency.