US Bridges

SB101-GOLF Crs Off over Commerce Blvd & Nwprr

Fair

Sonoma County, California · 04-SON-101-15.07-RNPK · Structure no. 20 0287K

Built
2012
13 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
357 ft
3 main spans
Daily traffic
11,000
2012 count
Owner
State
State Highway Agency

About this bridge

SB101-GOLF Crs Off over Commerce Blvd & Nwprr is a prestressed concrete continuous box beam or girders - multiple carrying SB101-GOLF Crs Off over Commerce Blvd & Nwprr in Sonoma County, California. It was built in 2012, so it is 13 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 6 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 11,000 vehicles a day, roughly 6% of them trucks, projected to reach 15,354 by 2046. The structure is 357 ft (108.9 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSB101-GOLF Crs Off
CrossesCommerce Blvd & Nwprr
Location04-SON-101-15.07-RNPK
RouteU.S. Route 101
CountySonoma County
StateCalifornia
Coordinates38.36526, -122.71273
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length357 ft (108.9 m)
Longest span125 ft (38.2 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,000 (2012)
Projected traffic15,354 by 2046
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 SB101-GOLF Crs Off over Commerce Blvd & Nwprr built?

It was built in 2012, making it 13 years old in 2025.

What condition is SB101-GOLF Crs Off over Commerce Blvd & Nwprr 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 August 2024.

How much traffic does SB101-GOLF Crs Off over Commerce Blvd & Nwprr carry?

About 11,000 vehicles per day (2012 count), of which roughly 6% are trucks.

How long is SB101-GOLF Crs Off over Commerce Blvd & Nwprr?

The structure is 357 ft (108.9 m) long with a longest span of 125 ft (38.2 m) and a deck 41 ft wide.

Who owns SB101-GOLF Crs Off over Commerce Blvd & Nwprr?

It is owned by the State Highway Agency.