US Bridges

East Zayante RD over Zayante Creek

Poor

Santa Cruz County, California · 3.2 MI N Graham Hill RD · Structure no. 36C0142

Built
1948
77 years old
Condition
Poor
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
85 ft
3 main spans
Daily traffic
2,000
2016 count
Owner
County
County Highway Agency

About this bridge

East Zayante RD over Zayante Creek is a steel stringer/multi-beam or girder carrying East Zayante RD over Zayante Creek in Santa Cruz County, California. It was built in 1948, so it is 77 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,000 vehicles a day, roughly 8% of them trucks, projected to reach 2,095 by 2043. The structure is 85 ft (26 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesEast Zayante RD
CrossesZayante Creek
Location3.2 MI N Graham Hill RD
RouteCounty Highway 0
Coordinates37.0859, -122.04706
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.9 US tons
Inventory rating21.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length85 ft (26 m)
Longest span30 ft (9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2016)
Projected traffic2,095 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$799,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was East Zayante RD over Zayante Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is East Zayante RD over Zayante Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does East Zayante RD over Zayante Creek carry?

About 2,000 vehicles per day (2016 count), of which roughly 8% are trucks.

How long is East Zayante RD over Zayante Creek?

The structure is 85 ft (26 m) long with a longest span of 30 ft (9 m) and a deck 26 ft wide.

Who owns East Zayante RD over Zayante Creek?

It is owned by the County Highway Agency.