US Bridges

S280-E92 Connector over Interstate 280 SR 92

Fair

San Mateo County, California · 04-SM-280-10.80 · Structure no. 35 0245F

Built
1973
52 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
1,245 ft
3 main spans
Daily traffic
14,500
1998 count
Owner
State
State Highway Agency

About this bridge

S280-E92 Connector over Interstate 280 SR 92 is a prestressed concrete continuous box beam or girders - multiple carrying S280-E92 Connector over Interstate 280 SR 92 in San Mateo County, California. It was built in 1973, so it is 52 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 14,500 vehicles a day, roughly 2% of them trucks, projected to reach 26,721 by 2040. The structure is 1,245 ft (379.6 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesS280-E92 Connector
CrossesInterstate 280 SR 92
Location04-SM-280-10.80
RouteInterstate 280
CountySan Mateo County
StateCalifornia
Coordinates37.50715, -122.33616
Functional classUrban Principal Arterial - Interstate

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 inspectionOctober 2023
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 geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+5 approach)
Design loadHS 20 + Mod
Structure length1,245 ft (379.6 m)
Longest span194 ft (59.2 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck17 ft (5.3 m)

Traffic and service

Average daily traffic14,500 (1998)
Projected traffic26,721 by 2040
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 S280-E92 Connector over Interstate 280 SR 92 built?

It was built in 1973, making it 52 years old in 2025.

What condition is S280-E92 Connector over Interstate 280 SR 92 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 S280-E92 Connector over Interstate 280 SR 92 carry?

About 14,500 vehicles per day (1998 count), of which roughly 2% are trucks.

How long is S280-E92 Connector over Interstate 280 SR 92?

The structure is 1,245 ft (379.6 m) long with a longest span of 194 ft (59.2 m) and a deck 44 ft wide.

Who owns S280-E92 Connector over Interstate 280 SR 92?

It is owned by the State Highway Agency.