NAICS 541690: expiring federal contracts in Other Scientific and Technical Consulting Services, Illinois

What NAICS 541690 covers, and the national list →

NAICS 541690, performed in Illinois. 20 prime contracts reach the end of their current period of performance within 365 days, 2 of them within 30. The national list for this code covers every state, and every industry in Illinois is on one page.

Data as of October 21, 2026, from USAspending.

Expiring: 20; within 365 days in Illinois
In the next 30 days: 2; 5 within 90 days
Current holders: 13; across 7 agencies
Obligated to date: $19.0M; median $215.8K

The 10 soonest to end

Ordered by end date. Every identifier links to the award on USAspending.

The 10 contracts under NAICS 541690 in Illinois that end soonest
Current holder	Agency	Ends	Value	Renewal score
OHIO VALLEY ARCHAEOLOGY, INC. N6247025F0081 — open this award on USAspending	Department of Defense Department of the Navy	Oct 30, 2026	$91,495	25some signals Limited competition (NOT AVAILABLE FOR COMPETITION) No option periods left (current end date is the potential end date)
LBT DIAGNOSTIC RADIATION PHYSICS CONSULTING LTD 36C25224P0009 — open this award on USAspending	Department of Veterans Affairs Department of Veterans Affairs	Oct 31, 2026	$41,400	35some signals 2 options have been exercised Set-aside applies (VETERAN SET ASIDE)
KRANZE TECHNOLOGY SOLUTIONS INC H9224123F0066 — open this award on USAspending	Department of Defense U.S. Special Operations Command	Dec 31, 2026	$731,585	25some signals Limited competition (NOT COMPETED UNDER SAP) No option periods left (current end date is the potential end date)
LAYLA KASSEM 75N95024P00408 — open this award on USAspending	Department of Health and Human Services National Institutes of Health	Dec 31, 2026	$461,118	45some signals 2 options have been exercised Limited competition (NOT COMPETED UNDER SAP), 1 offer received No option periods left (current end date is the potential end date)
FOREST PRESERVE DISTRICT OF DUPAGE COUNTY 140FS225P0051 — open this award on USAspending	Department of the Interior U.S. Fish and Wildlife Service	Jan 1, 2027	$30,000	35some signals One option has been exercised 1 offer received
NATIONAL OPINION RESEARCH CENTER 7571MN26F66001 — open this award on USAspending	Department of Health and Human Services Office of the Assistant Secretary for Financial Resources	Apr 19, 2027	$1,374,156	10few signals No option periods left (current end date is the potential end date)
NATIONAL OPINION RESEARCH CENTER 7571MN26F66002 — open this award on USAspending	Department of Health and Human Services Office of the Assistant Secretary for Financial Resources	Apr 19, 2027	$563,339	10few signals No option periods left (current end date is the potential end date)
DOMESTIC AWARDEES (UNDISCLOSED) 29FTC122C0026 — open this award on USAspending	Federal Trade Commission Federal Trade Commission	May 16, 2027	$49,000	45some signals 4 options have been exercised Limited competition (NOT COMPETED), 1 offer received No option periods left (current end date is the potential end date)
UNIVERSITY OF ILLINOIS W912P624P0009 — open this award on USAspending	Department of Defense Department of the Army	May 31, 2027	$224,926	25some signals Limited competition (NOT COMPETED), 1 offer received No option periods left (current end date is the potential end date)
KRANZE TECHNOLOGY SOLUTIONS INC H9224125F0051 — open this award on USAspending	Department of Defense U.S. Special Operations Command	Jun 1, 2027	$2,145,759	25some signals Limited competition (NOT COMPETED UNDER SAP) No option periods left (current end date is the potential end date)

10 more expiring contracts in this list

This page shows the 10 soonest of 20 contracts under NAICS 541690 in Illinois that end within 365 days. A subscription opens the rest, with filters, renewal scores and a weekly email when something new enters your window.

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Who buys in Illinois

Department of Defense7 expiring
Department of Veterans Affairs5 expiring
Department of Health and Human Services4 expiring
Department of Agriculture1 expiring
Department of Commerce1 expiring

NAICS 541690 in Illinois: questions vendors ask

How many federal contracts under NAICS 541690 in Illinois are expiring?

20 prime contracts in Other Scientific and Technical Consulting Services (NAICS 541690) in Illinois reach the end of their current period of performance within 12 months: 2 within 30 days and 5 within 90. They are held by 13 different vendors and were bought by 7 agencies. The figures are counted from USAspending, the government’s own record of prime contract awards, and rebuilt nightly.

When does the next NAICS 541690 contract in Illinois end?

The soonest ends on Oct 30, 2026. The table on this page lists the 10 soonest to end, in order, with the incumbent, the awarding agency, the end date and the amount obligated so far. An end date is the date in the award record, not a forecast.

Which agencies buy other scientific and technical consulting services in Illinois?

The agencies with the most expiring work here are Department of Defense (7 contracts), Department of Veterans Affairs (5 contracts), Department of Health and Human Services (4 contracts). In total 7 agencies have work under Other Scientific and Technical Consulting Services (NAICS 541690) in Illinois ending within 12 months.

Does an expiring contract mean a recompete is coming?

Not on its own. A period of performance that ends is work somebody has to win again, but agencies also extend, consolidate, insource or cancel, and the award record does not say which in advance. Findingbase shows the dates and a renewal score built from five fixed rules, with the reasons each one fired; it does not predict the outcome and does not publish solicitations. The solicitation, when there is one, appears on SAM.gov.

How this page is built

Every contract here comes from USAspending, the federal government’s own record of prime contract awards. A contract appears when its current period of performance ends within 365 days. The table lists the 10 soonest to end — not the largest, and not the highest scoring — so it is a sample of what is really coming rather than a showcase. Award identifiers link back to the source. This page was last rebuilt for Oct 21, 2026.

10 of the 10 contracts in the table above carry a renewal score, and 20 of the 20 in the whole list do. A contract with no score has not been through scoring yet: that is not a low score, it is no score. Scoring works through the soonest expiry dates first.