US Bridges

Holly Street over US Highway 101

Fair

San Mateo County, California · 04-SM-101-8.40 · Structure no. 35 0037

Built
1954
71 years old, rebuilt 1987
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
293 ft
4 main spans
Daily traffic
201,000
2000 count
Owner
State
State Highway Agency

About this bridge

Holly Street over US Highway 101 is a steel continuous stringer/multi-beam or girder carrying Holly Street over US Highway 101 in San Mateo County, California. It was built in 1954 and reconstructed in 1987, so it is 71 years old, older 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 201,000 vehicles a day, roughly 7% of them trucks, projected to reach 399,464 by 2041. The structure is 293 ft (89.3 m) long and 101 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesHolly Street
CrossesUS Highway 101
Location04-SM-101-8.40
RouteCounty Highway 0D003
Coordinates37.51349, -122.25632
Functional classRural Minor Arterial

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.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.8 US tons
Inventory rating28.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length293 ft (89.3 m)
Longest span72 ft (21.9 m)
Deck width101 ft (30.7 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic201,000 (2000)
Projected traffic399,464 by 2041
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemNo

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 Holly Street over US Highway 101 built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1987.

What condition is Holly Street over US Highway 101 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 August 2023.

How much traffic does Holly Street over US Highway 101 carry?

About 201,000 vehicles per day (2000 count), of which roughly 7% are trucks.

How long is Holly Street over US Highway 101?

The structure is 293 ft (89.3 m) long with a longest span of 72 ft (21.9 m) and a deck 101 ft wide.

Who owns Holly Street over US Highway 101?

It is owned by the State Highway Agency.