Public Works & DOT Subcontracting
Curb & gutter, sidewalks, and ADA ramps as a concrete subcontractor for DelDOT primes and heavy civil companies.
Learn MorePublic Works · Commercial · Heavy Civil · Delaware · 18+ Years
Concrete & Site Work Subcontractor for Commercial, DOT & Public Works Projects in Delaware
Tri-County Construction performs curb & gutter, sidewalks, ADA ramps, and site work as a concrete subcontractor for DelDOT prime contractors, GCs, and heavy civil companies across Delaware — plus driveways, patios, and sidewalks for New Castle County homeowners.
- DE Licensed & Insured (No. 2024712230)
- Active DelDOT Subcontractor
- 18+ Years in Business
- ABC Delaware Member
- NCC Chamber of Commerce Member
- 4.7 Google (26 reviews)
- Family-Owned
- Free Estimates
- Licensed & Insured
- Daily Communication
Proud Member Of
Project Spotlight
Currently Under Contract: DelDOT Subdivision Paving — New Castle County VIII
Tri-County Construction is the concrete subcontractor on DelDOT contract T202604908, working under prime contractor Allan Myers LP. Our scope covers curb & gutter, sidewalks, and ADA ramps across 8 locations in New Castle County. It's the kind of public-works, prime-contractor-managed job we're built to run — same crew, same standards, bigger scope.
See Commercial & Public Works Scopes
- Contract
- T202604908
- Prime
- Allan Myers LP
- Locations
- 8 in New Castle County
What We Pour
Concrete & Site Work Across Delaware
Public works and commercial concrete for DOT primes, heavy civil companies, GCs, and property managers — plus driveways, patios, and sidewalks for New Castle County homeowners. Every job built on a properly compacted base and poured to spec.
Commercial Concrete
Parking areas, sidewalks, pads, and flatwork for GCs, property managers, and commercial builds.
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Site Work & Excavation
Land clearing, excavation, and grading — site prep for homeowners, builders, and prime contractors.
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Concrete Driveways
Tear out, prep, pour, finish. Built 6 inches thick on a properly compacted base.
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Concrete Patios
Stamped and standard finishes that turn backyards into outdoor living rooms.
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Who We Work With
Subcontracting for DOT Primes, GCs & Heavy Civil Companies
Beyond residential driveways, patios, and sidewalks, Tri-County Construction works as a concrete subcontractor for DelDOT and other heavy civil companies — handling curb & gutter, sidewalks, ADA ramps, and sitework on commercial and public works projects across all three Delaware counties. Licensed, insured, and a member of ABC Delaware and the New Castle County Chamber of Commerce.
Commercial & Public WorksDOT Primes & Heavy Civil
A concrete sub you can hand a scope to — run off your schedule, your inspector sign-offs, and your pay-application cycle.
General Contractors
Curb & gutter, sidewalks, ADA ramps, pads, and flatwork sequenced around the rest of your trades.
Property Managers & HOAs
Parking areas, walkways, and ADA access scheduled around live business operations and resident access.
New Castle County Homeowners
Driveways, patios, and sidewalks from the same crew and the same standards, with daily owner check-ins.
Why Carlos Sr. and Carlos Jr. Build Differently
6"
Driveway Thickness
Most contractors pour 4". We pour 6 inches with a properly compacted stone base — built for Delaware freeze/thaw cycles.
Daily
Owner Check-Ins
Carlos checks in with you every day of the project. You're never wondering what's happening on your driveway.
18+
Years in Business
Two generations of Carlos D's pouring concrete in New Castle County, Delaware. The person who quotes the job is on it.
Where We Work
Proudly Serving New Castle County, Delaware
We pour concrete from Wilmington to Middletown — Newark, Bear, Hockessin, Glasgow, and every neighborhood in between. Local crew, local jobs, local accountability.
Browse All Service AreasBased in New Castle, DE
317 Hackberry Dr, New Castle, DE 19720
- (302) 419-3232
- Mon–Fri 7am–6pm · Sat 8am–2pm
What Neighbors Say
4.7 Stars from 26 Real Customers
“We were amazed at the scheduling precision of when concrete was delivered and poured. We liked the daily touching base with Carlos and Carlos Jr., the owners of Tri-County, LLC.”
— Linda G.
New Castle, DE
“From the initial consultation to receiving the quote and discussing my expectations, the entire process was excellent. Communication was smooth and consistent.”
— k Donaldson
Wilmington, DE
“Carlos and team did a fantastic job replacing my concrete driveway, sidewalk, and patio. Their work went above and beyond my expectations.”
— Brian Kelleher
Newark, DE
Ready for a Driveway You Won't Have to Replace Again?
Get a free estimate from a family that's been pouring concrete in New Castle County, Delaware for 18+ years.