US Bridges

Seaside Sch RD Shv over Hillside

Fair

San Mateo County, California · 0.25 Miles W/O Stage RD · Structure no. 35C0194

Built
1976
49 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Single or Spread
Steel
Length
68 ft
1 main span
Daily traffic
25
2018 count
Owner
County
County Highway Agency

About this bridge

Seaside Sch RD Shv over Hillside is a steel box beam or girders - single or spread carrying Seaside Sch RD Shv over Hillside in San Mateo County, California. It was built in 1976, so it is 49 years old, younger 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 25 vehicles a day, projected to reach 31 by 2042. The structure is 68 ft (20.7 m) long and 9 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSeaside Sch RD Shv
CrossesHillside
Location0.25 Miles W/O Stage RD
RouteCounty Highway 0
CountySan Mateo County
StateCalifornia
Coordinates37.32434, -122.38429
Functional classRural 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionApril 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.5 US tons
Inventory rating17.2 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length68 ft (20.7 m)
Longest span67 ft (20.4 m)
Deck width9 ft (2.6 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2018)
Projected traffic31 by 2042
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesOther
Detour if closed3.1 mi (5 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Seaside Sch RD Shv over Hillside built?

It was built in 1976, making it 49 years old in 2025.

What condition is Seaside Sch RD Shv 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 April 2024.

How much traffic does Seaside Sch RD Shv over Hillside carry?

About 25 vehicles per day (2018 count).

How long is Seaside Sch RD Shv over Hillside?

The structure is 68 ft (20.7 m) long with a longest span of 67 ft (20.4 m) and a deck 9 ft wide.

Who owns Seaside Sch RD Shv over Hillside?

It is owned by the County Highway Agency.