I-280 NB Offramp over Los Trancos Creek

Fair Condition57 years old6,700 vehicles/day

Location

StateCalifornia
CountySan Mateo
Location04-sm-280-r0.01
CarriesI-280 NB Offramp
CrossesLos Trancos Creek
Coordinates37.40996, -122.19339

Condition Ratings

Overall ConditionFair
Deck5 (Fair)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete
DesignBox Beam - Multiple
Total Length86.0 ft (26.2 m)
Max Span84.0 ft (25.6 m)
Deck Width39.7 ft (12.1 m)
Deck Area317.0 sq m
Main Spans1
Year Built1969

Traffic

Avg Daily Traffic6,700 (1998)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number35 0009S

Nearby Bridges

I-280 Northbound over Alpine RD & Los Trancos 0.1 mi Poor I-280 Southbound over Alpine RD & Los Trancos 0.1 mi Fair I-280 SB Onramp over Los Trancos Creek 0.1 mi Good Alpine RD over San Francisquito Creek 0.2 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 1.0 mi Fair Sand Hill RD over San Francisquito Creek 1.3 mi Fair Sand Hill Road (s) over Interstate 280 1.6 mi Fair