US Bridges

Mount Hermon Road over State Route 17

Fair

Santa Cruz County, California · 05-SCR-017-3.44-SCTV · Structure no. 36 0077

Built
1961
64 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
232 ft
4 main spans
Daily traffic
32,000
2016 count
Owner
State
State Highway Agency

About this bridge

Mount Hermon Road over State Route 17 is a concrete continuous box beam or girders - multiple carrying Mount Hermon Road over State Route 17 in Santa Cruz County, California. It was built in 1961, so it is 64 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 32,000 vehicles a day, roughly 2% of them trucks, projected to reach 42,243 by 2044. The structure is 232 ft (70.7 m) long and 40 ft wide.

Location

Open in Google Maps
CarriesMount Hermon Road
CrossesState Route 17
Location05-SCR-017-3.44-SCTV
RouteCity Street 0E172
CountySanta Cruz County
StateCalifornia
Coordinates37.0359, -122.0214
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.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.7 US tons
Inventory rating46.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length232 ft (70.7 m)
Longest span73 ft (22.3 m)
Deck width40 ft (12.3 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,000 (2016)
Projected traffic42,243 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mount Hermon Road over State Route 17 built?

It was built in 1961, making it 64 years old in 2025.

What condition is Mount Hermon Road over State Route 17 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 June 2024.

How much traffic does Mount Hermon Road over State Route 17 carry?

About 32,000 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is Mount Hermon Road over State Route 17?

The structure is 232 ft (70.7 m) long with a longest span of 73 ft (22.3 m) and a deck 40 ft wide.

Who owns Mount Hermon Road over State Route 17?

It is owned by the State Highway Agency.