Canonical itemUnderdrain, 4 in518 winning bids pooled from 5 agency descriptions · median $9.50 / LF
Other 612.0104
Pipe Underdrain 4-Inch
53Winning bids
1Agencies
May 12, 2015 – Feb 10, 2026Letting period
Deep 53 winning bids
$16.25/ LF▲ Low confidence
Treat this as a rough guide. The winning bids behind this median are widely scattered — the middle half spans 111% of the median.
- Winning bids
- Source documents
- 53
Winning bids only, as awarded. Nominal dollars. How we compute this
Where the number comes from
One of the 53 winning bids behind that median, with the agency’s own document one click away.
- Agency
- WisDOT · Columbia, Wisconsin
- Letting
- Nov 8, 2016
- Quantity
- 130 LF
- Contractor
- Michels Corporation
- Winning price
- $18.56 / LF
Price distribution
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Split by who let the work
State DOT, city and developer prices side by side.
Compared across agencies
What each agency has paid for this item.
Median by quarter
How this item has priced over time.