Elm St highway crossing
1204 Elm St · Tulsa, OK
FiberRocky / cobble
DP
Dale Prichard
Redline Underground · Rock Wrangler
Bore log
- Date
- Jun 14, 2026
- Bore length
- 480 ft
- Depth
- 14 ft
- Soil type
- Rocky / cobble
- Drill rig
- Vermeer D24x40 S3
- Locator
- DigiTrak F5 + FSD
- Mud mix
- 8 gal/min, bentonite + polymer, 42 sec funnel
- Reamer size
- 10 in
- Product installed
- 2in HDPE SDR-11, 288ct fiber
Challenges
Hit a cobble shelf around 180ft. Steering went erratic under the north lane — active interference from the traffic signal loop.
Tips for the next crew
Shoot the walkover grid before the shift starts. Drop to 6ft/min through the shelf and bump the polymer; the shelf is only ~30ft wide.
Discussion (2)
Marisol Vega
3 days agoLocator · 9 yrs
Confirmed the signal loop interference. Ran a 12kHz sonde instead of 33 and it cleaned right up.
Tyler Nunn
1 week agoOperator · 4 yrs
Bored this corridor last fall — shelf is real. We came in 3ft deeper and skated under it.