US Bridges

Channel Drive over Santa Rosa Crk Div Chan

Fair

Sonoma County, California · 0.1 MI S of Montgomery DR · Structure no. 20C0485

Built
1959
66 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete Continuous
Length
154 ft
4 main spans
Daily traffic
500
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

Channel Drive over Santa Rosa Crk Div Chan is a concrete continuous tee beam carrying Channel Drive over Santa Rosa Crk Div Chan in Sonoma County, California. It was built in 1959, so it is 66 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 500 vehicles a day, roughly 2% of them trucks, projected to reach 1,070 by 2042. The structure is 154 ft (46.9 m) long and 33 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesChannel Drive
CrossesSanta Rosa Crk Div Chan
Location0.1 MI S of Montgomery DR
RouteCity Street 0
CountySonoma County
StateCalifornia
Coordinates38.45649, -122.64839
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating38.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length154 ft (46.9 m)
Longest span39 ft (11.9 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2010)
Projected traffic1,070 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Channel Drive over Santa Rosa Crk Div Chan built?

It was built in 1959, making it 66 years old in 2025.

What condition is Channel Drive over Santa Rosa Crk Div Chan 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 2024.

How much traffic does Channel Drive over Santa Rosa Crk Div Chan carry?

About 500 vehicles per day (2010 count), of which roughly 2% are trucks.

How long is Channel Drive over Santa Rosa Crk Div Chan?

The structure is 154 ft (46.9 m) long with a longest span of 39 ft (11.9 m) and a deck 33 ft wide.

Who owns Channel Drive over Santa Rosa Crk Div Chan?

It is owned by the City or Municipal Highway Agency.