US Bridges

Sycamore RD over Boulder Creek

Fair

Ventura County, California · 1.61 MI E of Ste RTE 126 · Structure no. 52C0164

Built
1932
93 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete
Length
32 ft
1 main span
Daily traffic
600
2022 count
Owner
County
County Highway Agency

About this bridge

Sycamore RD over Boulder Creek is a concrete tee beam carrying Sycamore RD over Boulder Creek in Ventura County, California. It was built in 1932, so it is 93 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 600 vehicles a day, roughly 1% of them trucks, projected to reach 1,034 by 2046. The structure is 32 ft (9.9 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSycamore RD
CrossesBoulder Creek
Location1.61 MI E of Ste RTE 126
RouteCounty Highway 0
CountyVentura County
StateCalifornia
Coordinates34.38022, -118.98843
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22.2 US tons
Inventory rating15.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length32 ft (9.9 m)
Longest span30 ft (9.2 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2022)
Projected traffic1,034 by 2046
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Sycamore RD over Boulder Creek built?

It was built in 1932, making it 93 years old in 2025.

What condition is Sycamore RD over Boulder 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 Sycamore RD over Boulder Creek carry?

About 600 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Sycamore RD over Boulder Creek?

The structure is 32 ft (9.9 m) long with a longest span of 30 ft (9.2 m) and a deck 26 ft wide.

Who owns Sycamore RD over Boulder Creek?

It is owned by the County Highway Agency.