US Bridges

Conference DR over East Zayante Road

Fair

Santa Cruz County, California · 0.5 MI E of SR 9 · Structure no. 36C0038

Built
1930
95 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
523 ft
13 main spans
Daily traffic
5,000
2016 count
Owner
County
County Highway Agency

About this bridge

Conference DR over East Zayante Road is a steel stringer/multi-beam or girder carrying Conference DR over East Zayante Road in Santa Cruz County, California. It was built in 1930, so it is 95 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 5,000 vehicles a day, roughly 10% of them trucks, projected to reach 5,239 by 2043. The structure is 523 ft (159.4 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesConference DR
CrossesEast Zayante Road
Location0.5 MI E of SR 9
RouteCounty Highway 0
CountySanta Cruz County
StateCalifornia
Coordinates37.0499, -122.06392
Functional classUrban Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.3 US tons
Inventory rating23.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans13
Design loadUnknown
Structure length523 ft (159.4 m)
Longest span50 ft (15.2 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2016)
Projected traffic5,239 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway, waterway and railroad
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Conference DR over East Zayante Road built?

It was built in 1930, making it 95 years old in 2025.

What condition is Conference DR over East Zayante Road 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 October 2023.

How much traffic does Conference DR over East Zayante Road carry?

About 5,000 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Conference DR over East Zayante Road?

The structure is 523 ft (159.4 m) long with a longest span of 50 ft (15.2 m) and a deck 29 ft wide.

Who owns Conference DR over East Zayante Road?

It is owned by the County Highway Agency.