US Bridges

Hubbard Gulch RD over Marshall Creek

Good

Santa Cruz County, California · 0.1 MI W of SR 9 · Structure no. 36C0156

Built
1987
38 years old
Condition
Good
inspected November 2022
Type
Slab
Concrete
Length
50 ft
1 main span
Daily traffic
50
2015 count
Owner
County
County Highway Agency

About this bridge

Hubbard Gulch RD over Marshall Creek is a concrete slab carrying Hubbard Gulch RD over Marshall Creek in Santa Cruz County, California. It was built in 1987, so it is 38 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 144 by 2039. The structure is 50 ft (15.2 m) long and 28 ft wide.

CarriesHubbard Gulch RD
CrossesMarshall Creek
Location0.1 MI W of SR 9
RouteCounty Highway 0
Coordinates37.09117, -122.09679
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length50 ft (15.2 m)
Longest span46 ft (13.9 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2015)
Projected traffic144 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Hubbard Gulch RD over Marshall Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Hubbard Gulch RD over Marshall Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2022.

How much traffic does Hubbard Gulch RD over Marshall Creek carry?

About 50 vehicles per day (2015 count).

How long is Hubbard Gulch RD over Marshall Creek?

The structure is 50 ft (15.2 m) long with a longest span of 46 ft (13.9 m) and a deck 28 ft wide.

Who owns Hubbard Gulch RD over Marshall Creek?

It is owned by the County Highway Agency.