Attachment 2: Table of Borings
Updated
A PDF document (46 KB) attached to Geotechnical Drilling Services for Project OR FLAP DOUGLAS 251(2), Winchester Bridge Replacement, from the Federal Highway Administration. Due Nov 17, 2026, 2:00 PM (UTC-8).
File name: Attachment 002 Table of Borings.pdf
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Table of Borings - OR FLAP DOUGLAS 251(2) Winchester Creek Bridge Replacement - 2026 Geotechnical Investigation Boring ID
Purpose of Boring
Latitude1
Longitude1
Estimated
Estimated Feet
Feet of Auger
of Core (HQ)
Maximum Subgrade
Possible Maximum
Depth (ft)
No. of SPTs2 Samples
Possible
Shelby
Samples
Comments: Drill Type, Access, Instruments, etc.
BH26-01
Bridge Foundation
43.67511
-124.17883
Truck-mounted rig, traffic control/rolling closure, patch pavement. Underground utilities at approximate boring
location shall be avoided. Perform suspension logging for seismic design.
BH26-02
Bridge Foundation
43.67497
-124.17833
Truck-mounted rig, traffic control/rolling closure, patch pavement. Underground utilities at approximate boring
location shall be avoided.
TOTALS
NOTES:
1 GPS coordinates are approximate. Field locating is required. 2 SPT samples are on 2.5-ft intervals: 2.5, 5, 7.5, 10
3 HQ3 for all rock coring.
4 All boring locations are subject to change based on alterations to the proposed alignment. Borings may be moved up to 50 ft. from their current locations
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