US Bridges

State Route 114 over U.S. HWY 101 Ramps

Good

San Mateo County, California · 04-SM-114-5.00-EAPA · Structure no. 35 0354

Built
2019
6 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
267 ft
2 main spans
Daily traffic
51,000
2017 count
Owner
State
State Highway Agency

About this bridge

State Route 114 over U.S. HWY 101 Ramps is a prestressed concrete continuous stringer/multi-beam or girder carrying State Route 114 over U.S. HWY 101 Ramps in San Mateo County, California. It was built in 2019, so it is 6 years old, younger 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 51,000 vehicles a day, roughly 6% of them trucks, projected to reach 83,815 by 2043. The structure is 267 ft (81.4 m) long and 164 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesState Route 114
CrossesU.S. HWY 101 Ramps
Location04-SM-114-5.00-EAPA
RouteState Highway 114
Coordinates37.46836, -122.15508
Functional classUrban Other Principal Arterial

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 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length267 ft (81.4 m)
Longest span132 ft (40.2 m)
Deck width164 ft (50 m)
Roadway width120 ft (36.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51,000 (2017)
Projected traffic83,815 by 2043
Trucks6%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed5 mi (8 km)
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 State Route 114 over U.S. HWY 101 Ramps built?

It was built in 2019, making it 6 years old in 2025.

What condition is State Route 114 over U.S. HWY 101 Ramps 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 State Route 114 over U.S. HWY 101 Ramps carry?

About 51,000 vehicles per day (2017 count), of which roughly 6% are trucks.

How long is State Route 114 over U.S. HWY 101 Ramps?

The structure is 267 ft (81.4 m) long with a longest span of 132 ft (40.2 m) and a deck 164 ft wide.

Who owns State Route 114 over U.S. HWY 101 Ramps?

It is owned by the State Highway Agency.