US Bridges

Mt Hermon RD over Scbg RY & Zayante Creek

Good

Santa Cruz County, California · 0.7 MI NE Graham Hil RD · Structure no. 36C0092

Built
1971
54 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
454 ft
5 main spans
Daily traffic
19,400
2016 count
Owner
County
County Highway Agency

About this bridge

Mt Hermon RD over Scbg RY & Zayante Creek is a concrete continuous box beam or girders - multiple carrying Mt Hermon RD over Scbg RY & Zayante Creek in Santa Cruz County, California. It was built in 1971, so it is 54 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 19,400 vehicles a day, roughly 10% of them trucks, projected to reach 20,325 by 2043. The structure is 454 ft (138.5 m) long and 42 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesMt Hermon RD
CrossesScbg RY & Zayante Creek
Location0.7 MI NE Graham Hil RD
RouteCounty Highway 0
Coordinates37.05565, -122.06102
Functional classUrban Minor Arterial

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 protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110 US tons
Inventory rating66 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length454 ft (138.5 m)
Longest span120 ft (36.6 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,400 (2016)
Projected traffic20,325 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed6.2 mi (10 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 Mt Hermon RD over Scbg RY & Zayante Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Mt Hermon RD over Scbg RY & Zayante 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 October 2023.

How much traffic does Mt Hermon RD over Scbg RY & Zayante Creek carry?

About 19,400 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Mt Hermon RD over Scbg RY & Zayante Creek?

The structure is 454 ft (138.5 m) long with a longest span of 120 ft (36.6 m) and a deck 42 ft wide.

Who owns Mt Hermon RD over Scbg RY & Zayante Creek?

It is owned by the County Highway Agency.