Riverside County runs from the Corona and Eastvale growth corridors at the Orange County line all the way out to Temecula and Murrieta — a mix of new development going in and established communities replacing aging underground infrastructure. Mars Civil works both sides of that: utility installation for new construction and main, storm drain, and street work in built neighborhoods. We serve Riverside, Corona, Temecula, Murrieta, Moreno Valley, Perris, Norco, and Eastvale, bidding private and public work for builders, GCs, agencies, and property owners.
Civil & Underground Services in Riverside County
One Class A contractor for the whole underground scope — self-performed by our own crews, from open cut to final restoration.
- Underground Utilities — Complete wet and dry utility installation — pipe, vaults, and conduit — from trench to tie-in.
- Sewer & Water Mains — New mains, replacements, and tie-ins built to agency spec and pressure-tested before backfill.
- Storm Drain — Storm drain pipe, structures, and catch basins that move water where it belongs.
- Trenching & Excavation — Safe, shored, traffic-controlled excavation by our own operators and our own iron.
- Slurry Backfill & Flowable Fill — Flowable fill (CLSM) that self-compacts to spec — no compaction testing, streets reopen sooner.
- Concrete & Street Restoration — Trench paving, curb, gutter, and sidewalk restored to spec after the underground work.
- Grading & Paving — Rough and finish grading, base, and asphalt paving for streets, lots, and utility corridors.
Part of our eight-county Southern California service area — see all locations we serve.
Public Works in Riverside County
Mars Civil bids both public and private work in Riverside County. We are set up for public works the way agencies require it — prevailing-wage crews, certified payroll, and complete bid packages turned around on deadline. On the public side, we bid city and county work across Riverside County with the same package we run everywhere: prevailing-wage crews, certified payroll, and documentation turned around fast.
Mars Civil is a division of Mars Construction Industries Corp — CSLB License #1138550 (A – General Engineering), SB-PW and SB(Micro) certified, Small Business Certification ID 2046756. Our small business certification also helps agencies and prime contractors meet participation goals on public work.
Frequently Asked Questions
Which Riverside County cities does Mars Civil serve?
We serve Riverside, Corona, Temecula, Murrieta, Moreno Valley, Perris, Norco, and Eastvale, and we take on work elsewhere in the county for the right scope. Call 714.746.7611 with the location and we’ll tell you straight whether it’s in our range.
Does Mars Civil use slurry backfill on trench work?
Yes — where the city or county spec calls for it, we place slurry backfill (flowable fill / CLSM) in utility trenches. It flows around the pipe, self-compacts, needs no compaction testing, and lets the street get patched and reopened sooner than conventional backfill in lifts.
Is Mars Civil licensed for this work?
Yes. Mars Civil operates under CSLB License #1138550, Class A – General Engineering, as a division of Mars Construction Industries Corp. The Class A classification covers the fixed works we build: utilities, sewer and water, storm drain, earthwork, and paving.
How do I request a bid in Riverside County?
Use the Request a Bid page or call 714.746.7611. Send the plan set and your due date — we review it, price it, and confirm quickly whether we can meet your bid calendar.
Have plans? Get a number.
Bid requests, plan sets, and project questions — send them over and we’ll respond fast.