Ralston Avenue over US Highway 101

Good Condition52 years old37,234 vehicles/day

Location

StateCalifornia
CountySan Mateo
Location04-sm-101-9.55-bmt
CarriesRalston Avenue
CrossesUS Highway 101
Coordinates37.52597, -122.27036

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure7 (Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length263.1 ft (80.2 m)
Max Span131.9 ft (40.2 m)
Deck Width94.2 ft (28.7 m)
Deck Area2301.7 sq m
Main Spans2
Year Built1974

Traffic

Avg Daily Traffic37,234 (1998)
Truck Traffic2%
Lanes On Bridge6
Lanes Under Bridge11

Inspection & Ownership

Last Inspection823
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number35 0114

Nearby Bridges

Island Parkway over Marine PKWY To NB 101 0.1 mi Good Island Parkway over Autobahn Motors 0.1 mi Fair Marine PKWY over Belmont Slough 0.2 mi Good U.s. Highway 101 over Belmont Creek 0.4 mi Good Industrial Way over Belmont Creek 0.5 mi Good State Route 82 over Belmont Creek 0.6 mi Fair U.s. Highway 101 over Laurel Creek 0.7 mi Good Bridge DR Parkway over Redwood Shores Lagoon 0.8 mi Poor Bridge DR Parkway over Redwood Shores Lagoon 0.8 mi Poor Holly Street over US Highway 101 1.2 mi Fair