The Middlesex Corporation

Littleton, MA

UEI: NYBULJ4UXM23
CAGE: 0GEE8
Primary NAICS: 237310 Highway, Street, and Bridge Construction
SAM.gov registration: Active through Sep 2, 2027

Company facts

Self-certified in SAM.gov: For Profit Organization
Entity structure: Corporate Entity (Not Tax Exempt)
NAICS codes registered in SAM.gov: 237310 Highway, Street, and Bridge Construction Primary

236220 Commercial and Institutional Building Construction

237110 Water and Sewer Line and Related Structures Construction

237120 Oil and Gas Pipeline and Related Structures Construction

237130 Power and Communication Line and Related Structures Construction

237990 Other Heavy and Civil Engineering Construction

238910 Site Preparation Contractors
Corporate family: The Middlesex Corporation NYBULJ4UXM23

Middlesex-Sauer JV A Joint Venture KT8UB3HZMAN8

SCR Constructors Z1K1TFKJJ1F7
SAM.gov registration date: Jul 22, 2026
Physical address: 1 Spectacle Pond Rd, Littleton, MA 01460, USA
Website: middlesexco.com
Founded: 1972
Employees: 251-1K
Estimated annual revenue: $50M-$100M
Industry: Industrials

Capital Goods

Construction & Engineering
SIC code: 87 Engineering & Management Services
Profiles: LinkedIn

X

Crunchbase

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated Sep 2, 2026.

Recent federal awards

The Middlesex Corporation's 5 most recent federal contract and grant awards, newest first. Amounts are dollars obligated.
Award	Agency	Obligated	Awarded
In accordance with solicitation number 80KSC026R0007, launch complex (LC) 39 area duct bank system replacement, this… Contract · 80KSC026P0006	Kennedy Space Center	$200,000	Jul 10, 2026
200406 ! 000050 ! 5700 ! GV02 !ESC/PKO !F1965000D0015 !a ! N! !n ! 0006 !02 !20040316 ! 20040316 ! 062185517 ! 062185517… Contract · 0006	Electronic Systems Center	-$16,319	Mar 16, 2004
200211 ! 000182 ! 5700 ! GV02 !ESC/PKO !F1965000D0015 !a ! N! !n ! 0009 !20020929 ! 20021224 ! 062185517 ! 062185517 !… Contract · 0009	Electronic Systems Center	$60,357	Sep 29, 2002
200211 ! 000137 ! 5700 ! GV02 !ESC/PKO !F1965000D0015 !a ! N! !n ! 0007 !20020910 ! 20021010 ! 062185517 ! 062185517 !… Contract · 0007	Electronic Systems Center	$38,000	Sep 10, 2002
200211 ! 000138 ! 5700 ! GV02 !ESC/PKO !F1965000D0015 !a ! N! !n ! 0008 !20020910 ! 20021010 ! 062185517 ! 062185517 !… Contract · 0008	Electronic Systems Center	$23,295	Sep 10, 2002

Quick answers

What is The Middlesex Corporation's UEI?

The Middlesex Corporation's Unique Entity ID (UEI) in SAM.gov is NYBULJ4UXM23.

What is The Middlesex Corporation's CAGE code?

The Middlesex Corporation's CAGE code is 0GEE8.

What is The Middlesex Corporation's primary NAICS code?

The Middlesex Corporation's primary NAICS code is 237310 (Highway, Street, and Bridge Construction).

Where is The Middlesex Corporation located?

The Middlesex Corporation's physical address in SAM.gov is 1 Spectacle Pond Rd, Littleton, MA 01460, USA.

Is The Middlesex Corporation registered in SAM.gov?

Yes. The Middlesex Corporation's SAM.gov registration is active through September 2, 2027.

What is The Middlesex Corporation's most recent federal award?

The Middlesex Corporation's most recent federal contract award is In accordance with solicitation number 80KSC026R0007, launch complex (LC) 39 area duct bank system replacement, this… (80KSC026P0006), from Kennedy Space Center, on July 10, 2026.

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See The Middlesex Corporation's full federal record

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