US Bridges

Cloverdale RD over Butano Creek

Fair

San Mateo County, California · 0.2 MI N Canyon RD · Structure no. 35C0041

Built
1963
62 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete Continuous
Length
117 ft
3 main spans
Daily traffic
193
2014 count
Owner
County
County Highway Agency

About this bridge

Cloverdale RD over Butano Creek is a concrete continuous tee beam carrying Cloverdale RD over Butano Creek in San Mateo County, California. It was built in 1963, so it is 62 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 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 193 vehicles a day, roughly 9% of them trucks, projected to reach 512 by 2044. The structure is 117 ft (35.7 m) long and 34 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesCloverdale RD
CrossesButano Creek
Location0.2 MI N Canyon RD
RouteCounty Highway 0
CountySan Mateo County
StateCalifornia
Coordinates37.2159, -122.3497
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25.7 US tons
Inventory rating18.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length117 ft (35.7 m)
Longest span46 ft (14 m)
Deck width34 ft (10.5 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic193 (2014)
Projected traffic512 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Cloverdale RD over Butano Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is Cloverdale RD over Butano 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 April 2024.

How much traffic does Cloverdale RD over Butano Creek carry?

About 193 vehicles per day (2014 count), of which roughly 9% are trucks.

How long is Cloverdale RD over Butano Creek?

The structure is 117 ft (35.7 m) long with a longest span of 46 ft (14 m) and a deck 34 ft wide.

Who owns Cloverdale RD over Butano Creek?

It is owned by the County Highway Agency.