Or 224 (hwy 171) over Half Viaduct

Fair Condition56 years old337 vehicles/day

Location

StateOregon
CountyClackamas
Location16.2 Mi SE Estacada
CarriesOr 224 (hwy 171)
CrossesHalf Viaduct
Coordinates45.16386, -122.14240

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure6 (Satisfactory)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length198.2 ft (60.4 m)
Max Span65.9 ft (20.1 m)
Deck Width27.6 ft (8.4 m)
Deck Area507.4 sq m
Main Spans3
Year Built1970

Traffic

Avg Daily Traffic337 (2022)
Truck Traffic22%
Lanes On Bridge2

Inspection & Ownership

Last Inspection823
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number16008 171 03973

Nearby Bridges

Or 224 (hwy 171) over Clack River (armstrong) 0.4 mi Fair Road over Clackamas River 0.6 mi Fair Or 224 (hwy 171) over Clack Rvr. (carter Br.) 0.7 mi Fair Or 224 (hwy 171) over Roaring River 1.3 mi Fair Road over Boyer Creek 2.8 mi Good Road over North Fork Clackamas Ri* 3.0 mi Good Road over Clackamas River 3.9 mi Fair Or 224 (hwy 171) over Clack Rvr. (white Water) 4.1 mi Fair HWY 171 over Clack Rvr. (cripple Cr.) 4.6 mi Fair Road over North Fork Clackamas Ri* 4.8 mi Poor