US Bridges

Bear Crk RD over San Lorenzo River

Fair

Santa Cruz County, California · At State Route 9 · Structure no. 36C0084

Built
1954
71 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
170 ft
3 main spans
Daily traffic
5,000
2015 count
Owner
County
County Highway Agency

About this bridge

Bear Crk RD over San Lorenzo River is a steel continuous stringer/multi-beam or girder carrying Bear Crk RD over San Lorenzo River in Santa Cruz County, California. It was built in 1954, so it is 71 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 5,000 vehicles a day, roughly 10% of them trucks, projected to reach 7,651 by 2042. The structure is 170 ft (51.8 m) long and 30 ft wide. If it were closed, the detour would be 23 mi (37 km).

CarriesBear Crk RD
CrossesSan Lorenzo River
LocationAt State Route 9
RouteCounty Highway 0
Coordinates37.12844, -122.12288
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating34.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span70 ft (21.3 m)
Deck width30 ft (9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2015)
Projected traffic7,651 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 Bear Crk RD over San Lorenzo River built?

It was built in 1954, making it 71 years old in 2025.

What condition is Bear Crk RD over San Lorenzo River 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 November 2024.

How much traffic does Bear Crk RD over San Lorenzo River carry?

About 5,000 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is Bear Crk RD over San Lorenzo River?

The structure is 170 ft (51.8 m) long with a longest span of 70 ft (21.3 m) and a deck 30 ft wide.

Who owns Bear Crk RD over San Lorenzo River?

It is owned by the County Highway Agency.