US Bridges

Old Santa Cruz HWY over Aldercroft Creek

Fair

Santa Clara County, California · 0.6 MI Se/O SR17 · Structure no. 37C0823

Built
2007
18 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
200 ft
5 main spans
Daily traffic
1,950
2014 count
Owner
County
County Highway Agency

About this bridge

Old Santa Cruz HWY over Aldercroft Creek is a concrete continuous slab carrying Old Santa Cruz HWY over Aldercroft Creek in Santa Clara County, California. It was built in 2007, so it is 18 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 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 1,950 vehicles a day, roughly 5% of them trucks, projected to reach 1,561 by 2042. The structure is 200 ft (61 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesOld Santa Cruz HWY
CrossesAldercroft Creek
Location0.6 MI Se/O SR17
RouteCounty Highway 0
CountySanta Clara County
StateCalifornia
Coordinates37.17647, -121.98884
Functional classRural Major 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionFebruary 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length200 ft (61 m)
Longest span40 ft (12.2 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,950 (2014)
Projected traffic1,561 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 Old Santa Cruz HWY over Aldercroft Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Old Santa Cruz HWY over Aldercroft 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 February 2024.

How much traffic does Old Santa Cruz HWY over Aldercroft Creek carry?

About 1,950 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Old Santa Cruz HWY over Aldercroft Creek?

The structure is 200 ft (61 m) long with a longest span of 40 ft (12.2 m) and a deck 43 ft wide.

Who owns Old Santa Cruz HWY over Aldercroft Creek?

It is owned by the County Highway Agency.