US 20 over Mason Drain Ditch

Fair Condition79 years old14,500 vehicles/day

Location

StateIdaho
CountyCanyon
Location3.6 E. Caldwell
CarriesUS 20
CrossesMason Drain Ditch
Coordinates43.66314, -116.60906

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure7 (Good)
Substructure6 (Satisfactory)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length24.9 ft (7.6 m)
Max Span24.9 ft (7.6 m)
Deck Width53.8 ft (16.4 m)
Deck Area124.6 sq m
Main Spans1
Year Built1947

Traffic

Avg Daily Traffic14,500 (2023)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last Inspection223
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Structure Number000000000012240

Nearby Bridges

Stp 8213;middleton over Caldwell Highline Canal 1.0 mi Fair Linden Road over Mason Creek 1.2 mi Fair US 20 over Soloman Drain 1.2 mi Good Knot Lane over High Line Canal 1.3 mi Fair Stc8315;lincoln RD over Fifteen Mile Creek 1.4 mi Good US 20 over Fifteen Mile Creek 1.6 mi Fair Nhs 3761;northside over Fifteen Mile Creek 1.8 mi Fair Nhs 3761;northside over High Line Canal 1.8 mi Fair US 20 over High Line Canal 2.0 mi Good Stc 3750;middleton over Fifteen Mile Creek 2.1 mi Good