Department of Transportation (DOT): NAICS 541620 — Environmental Consulting Services

0open solicitations
$13.5Mobligated in FY2026
43contracts ending within 18 months

Open solicitations

Nothing is open in this category right now.

How DOT NAICS 541620 spends

FY2021$4.8M
FY2022$20.5M
FY2023$16.0M
FY2024$13.2M
FY2025$30.7M
FY2026$13.5M

Contract obligations by federal fiscal year (October–September), from USASpending.gov award data. IDIQ ceilings are excluded. * The current year is partial, and USASpending lags 4–8 weeks.

DOT NAICS 541620 contracts expiring in the next 18 months

43 contracts worth $53.7M.

IncumbentBuyerWhatValueEndsEst. solicitationRecord
THE PUBLIC ARCHAEOLOGY LABORATORY, INCORPORATEDFHWA541620 Environmental Consulting Services$47K30 November 2026Now / imminentDetails
TERRAPHASE ENGINEERING INCMaritime Administration541620 Environmental Consulting Services$289K05 December 2026Now / imminentDetails
WSP USA SOLUTIONS INCFHWA541620 Environmental Consulting Services$345K27 December 2026Now / imminentDetails
ICF INCORPORATED, L.L.C.FAA541620 Environmental Consulting Services$7.9M29 December 2026Now / imminentDetails
SUSTAINABLE DESIGN CONSORTIUM, (SDC) INCMaritime Administration541620 Environmental Consulting Services$4.8M31 December 2026Now / imminentDetails
WESTON SOLUTIONS INCFAA541620 Environmental Consulting Services$3.2M (4 orders)31 December 2026Now / imminentDetails
CULTURAL RESOURCE ANALYSTS, INC.FHWA541620 Environmental Consulting Services$187K31 December 2026Now / imminentDetails
AECOM TECHNICAL SERVICES, INC.Immediate Office of the Secretary of Transportation541620 Environmental Consulting Services$35K31 December 2026Now / imminentDetails
HARRIS MILLER MILLER & HANSON INC.FAA541620 Environmental Consulting Services$263K12 January 2027Now / imminentDetails
TRC ENVIRONMENTAL CORPORATIONFAA541620 Environmental Consulting Services$369K (2 orders)22 January 2027Now / imminentDetails
WSP USA SOLUTIONS INCFHWA541620 Environmental Consulting Services$8.8M27 January 2027Now / imminentDetails
TRC ENVIRONMENTAL CORPORATIONFAA541620 Environmental Consulting Services$190K (2 orders)18 February 2027Now / imminentDetails
WSP USA SOLUTIONS INCFHWA541620 Environmental Consulting Services$816K (2 orders)27 February 2027Now / imminentDetails
TRC ENVIRONMENTAL CORPORATIONFAA541620 Environmental Consulting Services$43K08 March 2027Now / imminentDetails
DEWBERRY ENGINEERS INC.Federal Transit Administration541620 Environmental Consulting Services$2.5M (2 orders)25 March 2027Now / imminentDetails

Contracts and task orders from USASpending.gov (FPDS) whose period of performance ends within 18 months, valued at $25K or more, excluding IDIQ ceilings and government-owned, contractor-operated facility contracts. Co-terminous orders from the same vendor, agency, NAICS and PSC ending in the same month are grouped. The solicitation date is an estimate (about six months before the contract ends): FedSift does not know whether a follow-on has been posted, so check SAM.gov.

NAICS 541620 across every agency → · Everything DOT has open →

FedSift turns SAM.gov and USASpending data into federal BD intelligence — smart matches, recompete radar, cited AI solicitation analysis and compliance matrices.

Source data: SAM.gov (solicitations) and USASpending.gov (awards), refreshed nightly. FedSift is not affiliated with the U.S. Government.

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