US Bridges

N101-S84 Connector over Woodside Road

Good

San Mateo County, California · 04-SM-101-5.39-RDWC · Structure no. 35 0081G

Built
1958
67 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete Continuous
Length
171 ft
4 main spans
Daily traffic
12,600
1998 count
Owner
State
State Highway Agency

About this bridge

N101-S84 Connector over Woodside Road is a concrete continuous slab carrying N101-S84 Connector over Woodside Road in San Mateo County, California. It was built in 1958, so it is 67 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,600 vehicles a day, roughly 2% of them trucks, projected to reach 27,846 by 2045. The structure is 171 ft (52.1 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesN101-S84 Connector
CrossesWoodside Road
Location04-SM-101-5.39-RDWC
RouteU.S. Route 101
CountySan Mateo County
StateCalifornia
Coordinates37.4901, -122.21161
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length171 ft (52.1 m)
Longest span48 ft (14.6 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,600 (1998)
Projected traffic27,846 by 2045
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 N101-S84 Connector over Woodside Road built?

It was built in 1958, making it 67 years old in 2025.

What condition is N101-S84 Connector over Woodside Road in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does N101-S84 Connector over Woodside Road carry?

About 12,600 vehicles per day (1998 count), of which roughly 2% are trucks.

How long is N101-S84 Connector over Woodside Road?

The structure is 171 ft (52.1 m) long with a longest span of 48 ft (14.6 m) and a deck 26 ft wide.

Who owns N101-S84 Connector over Woodside Road?

It is owned by the State Highway Agency.