Department of Transportation contractors in Illinois

Use this state-scoped buyer page to see which visible federal contractors sit closest to Department of Transportation inside Illinois.

State: Illinois

Last updated: April 7, 2026

Visible recipients

Mapped obligations

$184,912,689

Visible recipients tied to Department of Transportation in Illinois

Walsh Federal LLC

Chicago, IL

Walsh Federal LLC is a federal category business profile based in Chicago, IL. The current public data layer shows $406,413,501 in visible federal obligations across 169 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Y1BZ.

$184,912,689

Browse by NAICS

Industry paths for Department of Transportation in Illinois

NAICS 236220

1 visible recipients and $2,317,374,085 in mapped obligations inside this state-buyer lane.

NAICS 236210

1 visible recipients and $284,135,296 in mapped obligations inside this state-buyer lane.

NAICS 488111

1 visible recipients and $25,199,519 in mapped obligations inside this state-buyer lane.

NAICS 541990

1 visible recipients and $622,102 in mapped obligations inside this state-buyer lane.

Browse by PSC

Product and service paths for Department of Transportation in Illinois

PSC Y1BZ

1 visible recipients and $973,157,261 in mapped obligations inside this state-buyer lane.

PSC Y1JZ

1 visible recipients and $508,858,693 in mapped obligations inside this state-buyer lane.

PSC Y1BA

1 visible recipients and $242,587,169 in mapped obligations inside this state-buyer lane.

PSC Y1AZ

1 visible recipients and $239,669,720 in mapped obligations inside this state-buyer lane.

PSC Y1AA

1 visible recipients and $173,696,214 in mapped obligations inside this state-buyer lane.

Top ranking views

Focused rankings for Department of Transportation in Illinois

Top NAICS paths

Open a ranked industry-only view when you want the strongest NAICS pages inside this exact state-buyer slice.

Top PSC paths

Use a ranked service-only view when you want the strongest PSC pages inside this exact state-buyer slice.

Deep ranking entry points

Fastest deep clicks for Department of Transportation in Illinois

NAICS 236220 -> top PSC

Jump straight into the strongest service-code rankings for the leading industry lane in this exact state-buyer slice.

PSC Y1BZ -> top NAICS

Jump straight into the strongest industry-code rankings for the leading service lane in this exact state-buyer slice.