US Bridges

Fjord RD over Alder Creek

Good

Nevada County, California · Btwn Alder CR RD Nwood Bl · Structure no. 17C0088

Built
1970
55 years old
Condition
Good
inspected August 2024
Type
Arch - Deck
Steel
Length
22 ft
1 main span
Daily traffic
2,145
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

Fjord RD over Alder Creek is a steel arch - deck carrying Fjord RD over Alder Creek in Nevada County, California. It was built in 1970, so it is 55 years old, older 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 2,145 vehicles a day, roughly 10% of them trucks, projected to reach 2,653 by 2046. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFjord RD
CrossesAlder Creek
LocationBtwn Alder CR RD Nwood Bl
RouteCounty Highway 0
Coordinates39.35964, -120.24832
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,145 (2011)
Projected traffic2,653 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 Fjord RD over Alder Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Fjord RD over Alder 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 August 2024.

How much traffic does Fjord RD over Alder Creek carry?

About 2,145 vehicles per day (2011 count), of which roughly 10% are trucks.

How long is Fjord RD over Alder Creek?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m).

Who owns Fjord RD over Alder Creek?

It is owned by the City or Municipal Highway Agency.