I-280 SB Onramp over Los Trancos Creek

Good Condition57 years old2,100 vehicles/day

Location

StateCalifornia
CountySan Mateo
Location04-sm-280-r0.01
CarriesI-280 SB Onramp
CrossesLos Trancos Creek
Coordinates37.40820, -122.19423

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete
DesignBox Beam - Multiple
Total Length75.1 ft (22.9 m)
Max Span73.2 ft (22.3 m)
Deck Width30.5 ft (9.3 m)
Deck Area213.0 sq m
Main Spans1
Year Built1969

Traffic

Avg Daily Traffic2,100 (1998)
Truck Traffic2%
Lanes On Bridge1

Inspection & Ownership

Last InspectionOctober 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number35 0009K

Nearby Bridges

I-280 Southbound over Alpine RD & Los Trancos 0.0 mi Fair I-280 Northbound over Alpine RD & Los Trancos 0.1 mi Poor I-280 NB Offramp over Los Trancos Creek 0.1 mi Fair Alpine RD over San Francisquito Creek 0.3 mi Fair Interstate 280 NB over San Francisquito Creek 0.3 mi Poor Interstate 280 SB over San Francisquito Creek 0.3 mi Poor Interstate 280 over Stanford Linear Accel 1.0 mi Fair Junipero Serra Bld over San Francisquito Creek 1.1 mi Fair Sand Hill RD over San Francisquito Creek 1.4 mi Fair Sand Hill Road (s) over Interstate 280 1.6 mi Fair