US Bridges

W380-N101 Connectr over North Channel

Fair

San Mateo County, California · 04-SM-380-6.48-SBR · Structure no. 35 0281F

Built
1976
49 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
180 ft
2 main spans
Daily traffic
1,700
2001 count
Owner
State
State Highway Agency

About this bridge

W380-N101 Connectr over North Channel is a concrete continuous box beam or girders - multiple carrying W380-N101 Connectr over North Channel 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 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 1,700 vehicles a day, roughly 6% of them trucks, projected to reach 5,788 by 2046. The structure is 180 ft (54.9 m) long and 27 ft wide.

CarriesW380-N101 Connectr
CrossesNorth Channel
Location04-SM-380-6.48-SBR
RouteInterstate 380
Coordinates37.63777, -122.40331
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating82.1 US tons
Inventory rating63.6 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length180 ft (54.9 m)
Longest span95 ft (29 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2001)
Projected traffic5,788 by 2046
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was W380-N101 Connectr over North Channel built?

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

What condition is W380-N101 Connectr over North Channel 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 February 2024.

How much traffic does W380-N101 Connectr over North Channel carry?

About 1,700 vehicles per day (2001 count), of which roughly 6% are trucks.

How long is W380-N101 Connectr over North Channel?

The structure is 180 ft (54.9 m) long with a longest span of 95 ft (29 m) and a deck 27 ft wide.

Who owns W380-N101 Connectr over North Channel?

It is owned by the State Highway Agency.