US Bridges

SR 12 EB over South E Street

Fair

Sonoma County, California · 04-SON-012-R16.65-SRO · Structure no. 20 0266R

Built
1990
35 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
140 ft
1 main span
Daily traffic
30,000
2016 count
Owner
State
State Highway Agency

About this bridge

SR 12 EB over South E Street is a prestressed concrete box beam or girders - multiple carrying SR 12 EB over South E Street in Sonoma County, California. It was built in 1990, so it is 35 years old, younger 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 5 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 30,000 vehicles a day, roughly 2% of them trucks, projected to reach 44,370 by 2046. The structure is 140 ft (42.7 m) long and 42 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSR 12 EB
CrossesSouth E Street
Location04-SON-012-R16.65-SRO
RouteState Highway 12
Coordinates38.43254, -122.7047
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.7 US tons
Inventory rating36.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length140 ft (42.7 m)
Longest span138 ft (42.1 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,000 (2016)
Projected traffic44,370 by 2046
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR 12 EB over South E Street built?

It was built in 1990, making it 35 years old in 2025.

What condition is SR 12 EB over South E Street 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 September 2024.

How much traffic does SR 12 EB over South E Street carry?

About 30,000 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is SR 12 EB over South E Street?

The structure is 140 ft (42.7 m) long with a longest span of 138 ft (42.1 m) and a deck 42 ft wide.

Who owns SR 12 EB over South E Street?

It is owned by the State Highway Agency.