US Bridges

Arnold DR over Felder Creek

Fair

Sonoma County, California · 1.5 MI N of SR 116 · Structure no. 20C0211

Built
1967
58 years old
Condition
Fair
inspected May 2021
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
16,500
2015 count
Owner
County
County Highway Agency

About this bridge

Arnold DR over Felder Creek is a concrete continuous culvert carrying Arnold DR over Felder Creek in Sonoma County, California. It was built in 1967, so it is 58 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 16,500 vehicles a day, roughly 2% of them trucks, projected to reach 22,369 by 2040. The structure is 26 ft (7.9 m) long and 62 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesArnold DR
CrossesFelder Creek
Location1.5 MI N of SR 116
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.27392, -122.49034
Functional classRural Major Collector

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 inspectionMay 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to 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 length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width62 ft (18.9 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,500 (2015)
Projected traffic22,369 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Arnold DR over Felder Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Arnold DR over Felder 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 May 2021.

How much traffic does Arnold DR over Felder Creek carry?

About 16,500 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is Arnold DR over Felder Creek?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 62 ft wide.

Who owns Arnold DR over Felder Creek?

It is owned by the County Highway Agency.