US Bridges

Hyde ST over Hillside

Fair

San Francisco County, California · 0.1 MI S Bay ST · Structure no. 34C0068

Built
1931
94 years old
Condition
Fair
inspected December 2024
Type
Girder and Floorbeam System
Concrete Continuous
Length
101 ft
5 main spans
Daily traffic
8,000
2015 count
Owner
County
County Highway Agency

About this bridge

Hyde ST over Hillside is a concrete continuous girder and floorbeam system carrying Hyde ST over Hillside in San Francisco County, California. It was built in 1931, so it is 94 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 6 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 8,000 vehicles a day, roughly 5% of them trucks, projected to reach 8,581 by 2042. The structure is 101 ft (30.7 m) long and 21 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesHyde ST
CrossesHillside
Location0.1 MI S Bay ST
RouteCity Street 0
Coordinates37.80364, -122.42008
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating18.5 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length101 ft (30.7 m)
Longest span20 ft (6.1 m)
Deck width21 ft (6.5 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,000 (2015)
Projected traffic8,581 by 2042
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesOther
Detour if closed123.7 mi (199 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 Hyde ST over Hillside built?

It was built in 1931, making it 94 years old in 2025.

What condition is Hyde ST over Hillside 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 December 2024.

How much traffic does Hyde ST over Hillside carry?

About 8,000 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Hyde ST over Hillside?

The structure is 101 ft (30.7 m) long with a longest span of 20 ft (6.1 m) and a deck 21 ft wide.

Who owns Hyde ST over Hillside?

It is owned by the County Highway Agency.