US Bridges

Hillview Way over Coleman Creek

Fair

Sonoma County, California · 0.1 MI S Holly · Structure no. 20C0470

Built
1979
46 years old
Condition
Fair
inspected June 2021
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
1,000
2013 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hillview Way over Coleman Creek is a concrete continuous culvert carrying Hillview Way over Coleman Creek in Sonoma County, California. It was built in 1979, so it is 46 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 1,000 vehicles a day, roughly 1% of them trucks, projected to reach 1,283 by 2038. The structure is 22 ft (6.7 m) long and 47 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesHillview Way
CrossesColeman Creek
Location0.1 MI S Holly
RouteCity Street 0
Coordinates38.36942, -122.69004
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width47 ft (14.3 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2013)
Projected traffic1,283 by 2038
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Hillview Way over Coleman Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is Hillview Way over Coleman 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 2021.

How much traffic does Hillview Way over Coleman Creek carry?

About 1,000 vehicles per day (2013 count), of which roughly 1% are trucks.

How long is Hillview Way over Coleman Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 47 ft wide.

Who owns Hillview Way over Coleman Creek?

It is owned by the City or Municipal Highway Agency.