US Highway 101 SB over Lytton Springs Road

Fair Condition52 years old13,500 vehicles/day

Location

StateCalifornia
CountySonoma
Location04-son-101-r38.56
CarriesUS Highway 101 SB
CrossesLytton Springs Road
Coordinates38.65939, -122.87448

Condition Ratings

Overall ConditionFair
Deck5 (Fair)
Superstructure5 (Fair)
Substructure6 (Satisfactory)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length163.1 ft (49.7 m)
Max Span161.1 ft (49.1 m)
Deck Width41.0 ft (12.5 m)
Deck Area621.2 sq m
Main Spans1
Year Built1974

Traffic

Avg Daily Traffic13,500 (2015)
Truck Traffic11%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last Inspection423
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number20 0233L

Nearby Bridges

US Highway 101 NB over Lytton Springs Road 0.0 mi Fair US Highway 101 NB over Souverain RD 1.4 mi Fair US Highway 101 SB over Souverain RD 1.4 mi Fair US Highway 101 SB over Chiquita Road 1.6 mi Poor US Highway 101 NB over Chiquita Road 1.6 mi Fair Dry Crk Canyon RD over Lytton Springs Creek 2.1 mi Good US Highway 101 NB over Geyserville Avenue 2.2 mi Fair US Highway 101 SB over Geyserville Avenue 2.2 mi Fair Dry Creek RD over Foss Creek 2.3 mi Good US Highway 101 over Dry Creek Road 2.3 mi Poor