US Bridges

Yulupa Ave over Matanzas Creek

Fair

Sonoma County, California · 0.2 M South Creekside RD · Structure no. 20C0195

Built
1961
64 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
10,000
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

Yulupa Ave over Matanzas Creek is a concrete continuous tee beam carrying Yulupa Ave over Matanzas Creek in Sonoma County, California. It was built in 1961, so it is 64 years old, older 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 10,000 vehicles a day, roughly 2% of them trucks, projected to reach 7,064 by 2042. The structure is 102 ft (31.1 m) long and 78 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesYulupa Ave
CrossesMatanzas Creek
Location0.2 M South Creekside RD
RouteCity Street 0
Coordinates38.43224, -122.6682
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.3 US tons
Inventory rating28.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length102 ft (31.1 m)
Longest span41 ft (12.5 m)
Deck width78 ft (23.7 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2010)
Projected traffic7,064 by 2042
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Yulupa Ave over Matanzas Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is Yulupa Ave over Matanzas Creek 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 Yulupa Ave over Matanzas Creek carry?

About 10,000 vehicles per day (2010 count), of which roughly 2% are trucks.

How long is Yulupa Ave over Matanzas Creek?

The structure is 102 ft (31.1 m) long with a longest span of 41 ft (12.5 m) and a deck 78 ft wide.

Who owns Yulupa Ave over Matanzas Creek?

It is owned by the City or Municipal Highway Agency.