US Bridges

North Dowd Road over Coon Creek

Good

Placer County, California · 0.3 MI N of West Wise RD · Structure no. 19C0272

Built
2022
3 years old
Condition
Good
inspected July 2023
Type
Slab
Prestressed Concrete Continuous
Length
152 ft
2 main spans
Daily traffic
820
2023 count
Owner
County
County Highway Agency

About this bridge

North Dowd Road over Coon Creek is a prestressed concrete continuous slab carrying North Dowd Road over Coon Creek in Placer County, California. It was built in 2022, so it is 3 years old, younger 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 820 vehicles a day, roughly 3% of them trucks, projected to reach 1,100 by 2043. The structure is 152 ft (46.4 m) long and 36 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesNorth Dowd Road
CrossesCoon Creek
Location0.3 MI N of West Wise RD
RouteCounty Highway 0
Coordinates38.93123, -121.37714
Functional classRural Minor Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length152 ft (46.4 m)
Longest span73 ft (22.4 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic820 (2023)
Projected traffic1,100 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was North Dowd Road over Coon Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is North Dowd Road over Coon Creek 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 July 2023.

How much traffic does North Dowd Road over Coon Creek carry?

About 820 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is North Dowd Road over Coon Creek?

The structure is 152 ft (46.4 m) long with a longest span of 73 ft (22.4 m) and a deck 36 ft wide.

Who owns North Dowd Road over Coon Creek?

It is owned by the County Highway Agency.