US 20 26 Ramp over Boise Rvr Slough;ramp

Good Condition35 years old6,500 vehicles/day

Location

StateIdaho
CountyAda
LocationBoise;fairview/chinden Ic
CarriesUS 20 26 Ramp
CrossesBoise Rvr Slough;ramp
Coordinates43.61867, -116.23253

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway8 (Very Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Single/Spread
Total Length252.0 ft (76.8 m)
Max Span109.9 ft (33.5 m)
Deck Width27.6 ft (8.4 m)
Deck Area645.1 sq m
Main Spans3
Year Built1991

Traffic

Avg Daily Traffic6,500 (2023)
Truck Traffic3%
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last Inspection622
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Structure Number000000000018998

Nearby Bridges