US Bridges

Bloomfield RD over South Yuba River

PoorPosted for load

Nevada County, California · 1.5 MI N Rock Creek RD · Structure no. 17C0006

Built
1904
121 years old, rebuilt 1989
Condition
Poor
inspected August 2024
Type
Arch - Deck
Steel
Length
168 ft
1 main span
Daily traffic
143
2016 count
Owner
County
County Highway Agency

About this bridge

Bloomfield RD over South Yuba River is a steel arch - deck carrying Bloomfield RD over South Yuba River in Nevada County, California. It was built in 1904 and reconstructed in 1989, so it is 121 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 143 vehicles a day, roughly 2% of them trucks, projected to reach 408 by 2041. The structure is 168 ft (51.2 m) long and 14 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesBloomfield RD
CrossesSouth Yuba River
Location1.5 MI N Rock Creek RD
RouteCounty Highway 0
Coordinates39.32999, -120.98423
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating14.3 US tons
Inventory rating9.3 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckWood or timber
Main spans1 (+4 approach)
Design loadUnknown
Structure length168 ft (51.2 m)
Longest span114 ft (34.7 m)
Deck width14 ft (4.2 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic143 (2016)
Projected traffic408 by 2041
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$776,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Bloomfield RD over South Yuba River built?

It was built in 1904, making it 121 years old in 2025. It was reconstructed in 1989.

What condition is Bloomfield RD over South Yuba River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Bloomfield RD over South Yuba River carry?

About 143 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is Bloomfield RD over South Yuba River?

The structure is 168 ft (51.2 m) long with a longest span of 114 ft (34.7 m) and a deck 14 ft wide.

Who owns Bloomfield RD over South Yuba River?

It is owned by the County Highway Agency.