Contractor South Dakota

Mainline Contracting Inc

As printed on public bid tabulations. Counts only on this half of the page.

50Lettings bid

1Agencies

Jan 16, 2013 – May 20, 2026Date range

Agencies this contractor has bid with

SDDOT

Items most often priced

Traffic Control Signs / SF
Traffic Control, Miscellaneous / LS
Mobilization / LS
Type B Drainage Fabric / SY
Unclassified Excavation / CY
Flagging / HOUR
Type 3 Barricade / EA
12" Diameter Erosion Control Wattle / LF
Base Course / TON
Incentive/Disincentive Pay / DAY

Item pages show winning bids only; this list says what the contractor priced, not what it won.

Latest source documents

Letting	Agency	Project	Source
May 20, 2026	SDDOT	08RT	Open the bid tab ↗apps.sd.gov
Apr 1, 2026	SDDOT	095A	Open the bid tab ↗apps.sd.gov
Mar 4, 2026	SDDOT	08RV	Open the bid tab ↗apps.sd.gov
Feb 18, 2026	SDDOT	08UX	Open the bid tab ↗apps.sd.gov
Dec 3, 2025	SDDOT	07CF	Open the bid tab ↗apps.sd.gov

Names are printed as the bidder on public bid tabulations. Grouping of spelling variants is automatic; tell us if two companies were merged or one was split.

Same name in other states: North Carolina.

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Win rate, rank and price position

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