White Bird Grade

White Bird Grade (HM28Y4)

Location: Grangeville, ID 83530 Idaho County
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Country: United States of America
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N 45° 50.498', W 116° 14.178'

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For 60 years after construction was completed in 1915, White Bird Grade (Across the Valley) served Idaho's only north-south highway.
Many tortuous curves and switchbacks -which, if placed together, made 37 complete circles - let the old road climb 2900 feet in 14 miles. Gaining an elevation of 4429 at its summit, that route represented a significant engineering and construction achievement. This new grade did not replace it until 1975.
HM NumberHM28Y4
Placed ByIdaho Department of Transportation
Marker ConditionNo reports yet
Date Added Saturday, June 30th, 2018 at 4:01pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)11T E 559303 N 5076735
Decimal Degrees45.84163333, -116.23630000
Degrees and Decimal MinutesN 45° 50.498', W 116° 14.178'
Degrees, Minutes and Seconds45° 50' 29.88" N, 116° 14' 10.68" W
Driving DirectionsGoogle Maps
Area Code(s)208
Which side of the road?Marker is on the right when traveling North
Closest Postal AddressAt or near US-95, Grangeville ID 83530, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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