US Bridges

Bloomfield RD over Bloomfield Creek

PoorPosted for load

Sonoma County, California · 0.18 MI N Valley Ford RD · Structure no. 20C0293

Built
1917
108 years old, rebuilt 1984
Condition
Poor
inspected October 2024
Type
Tee Beam
Concrete
Length
69 ft
1 main span
Daily traffic
524
2015 count
Owner
County
County Highway Agency

About this bridge

Bloomfield RD over Bloomfield Creek is a concrete tee beam carrying Bloomfield RD over Bloomfield Creek in Sonoma County, California. It was built in 1917 and reconstructed in 1984, so it is 108 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 3 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 524 vehicles a day, roughly 2% of them trucks, projected to reach 748 by 2046. The structure is 69 ft (21 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBloomfield RD
CrossesBloomfield Creek
Location0.18 MI N Valley Ford RD
RouteCounty Highway 0
Coordinates38.31246, -122.85124
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.6 US tons
Inventory rating14.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadUnknown
Structure length69 ft (21 m)
Longest span36 ft (11 m)
Deck width52 ft (15.8 m)
Roadway width49 ft (14.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic524 (2015)
Projected traffic748 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.3 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Bloomfield RD over Bloomfield Creek built?

It was built in 1917, making it 108 years old in 2025. It was reconstructed in 1984.

What condition is Bloomfield RD over Bloomfield Creek 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 October 2024.

How much traffic does Bloomfield RD over Bloomfield Creek carry?

About 524 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is Bloomfield RD over Bloomfield Creek?

The structure is 69 ft (21 m) long with a longest span of 36 ft (11 m) and a deck 52 ft wide.

Who owns Bloomfield RD over Bloomfield Creek?

It is owned by the County Highway Agency.