Interstate 280 SB over San Francisquito Creek

Poor Condition57 years old46,500 vehicles/day

Location

StateCalifornia
CountySan Mateo
Location04-sm-280-r0.30
CarriesInterstate 280 SB
CrossesSan Francisquito Creek
Coordinates37.41052, -122.19916

Condition Ratings

Overall ConditionPoor
Deck4 (Poor)
Superstructure7 (Good)
Substructure5 (Fair)
Channel/Waterway7 (Good)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length245.1 ft (74.7 m)
Max Span83.0 ft (25.3 m)
Deck Width69.6 ft (21.2 m)
Deck Area1583.6 sq m
Main Spans3
Year Built1969

Traffic

Avg Daily Traffic46,500 (2009)
Truck Traffic3%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number35 0234L

Nearby Bridges

Interstate 280 NB over San Francisquito Creek 0.0 mi Poor I-280 Northbound over Alpine RD & Los Trancos 0.3 mi Poor I-280 Southbound over Alpine RD & Los Trancos 0.3 mi Fair I-280 SB Onramp over Los Trancos Creek 0.3 mi Good Alpine RD over San Francisquito Creek 0.3 mi Fair I-280 NB Offramp over Los Trancos Creek 0.3 mi Fair Interstate 280 over Stanford Linear Accel 0.7 mi Fair Junipero Serra Bld over San Francisquito Creek 1.0 mi Fair Sand Hill Road (s) over Interstate 280 1.3 mi Fair Sand Hill Road (n) over Interstate 280 1.3 mi Fair