Cojo installs extruded and poured concrete curbing across the 97008 zip -- Beaverton's Sexton Mountain and Murray Hill area in southwest Washington County. The local work is heavily shaped by terrain: drainage curbing for steep subdivision streets, replacement curb on aging 1990s-era developments, and subdivision-perimeter curbing for newer infill projects. Pricing depends on linear footage, curb profile, and access, but most local jobs land within the published baseline range below.
Concrete Curbing in 97008 -- The Local Picture
Sexton Mountain and Murray Hill are two of the steeper residential areas in Beaverton, with grades in some streets exceeding 12 percent. That makes drainage curb a structural element rather than a decorative one. A curb that doesn't channel water effectively in this terrain will direct runoff into garages, foundations, and downhill landscape -- a real problem in a zip with 35 to 45 inches of annual rainfall.
The newer subdivision build-outs along the southern edge of 97008 -- newer streets in the Sexton Mountain and Cooper Mountain transition zone -- are typical new-construction extruded curb work. The older 1990s subdivisions are now in the replacement window, where original curb is spalling from freeze-thaw, settlement at expansion joints is visible, and the curb-and-gutter system has lost effective drainage capacity.
Beaverton city stormwater code (Beaverton Municipal Code Title 4) and Washington County drainage standards both apply. Subdivision-scale curb work and commercial curb work require permits and approved drainage plans. Residential replacement curb on private driveways generally stays below the permit line as long as it doesn't change drainage to the public right-of-way.
Curb Types We Install in 97008
The four types that cover most local work:
- Extruded curb (machine-formed) -- the workhorse for subdivision streets and longer parking-lot perimeter runs. Fast, consistent, cost-effective on runs over 100 feet.
- Poured curb and gutter -- used where the curb has to tie into an ADA ramp, a sidewalk apron, or a complex transition.
- Mountable rolled curb -- common where residents need to drive across the curb to access a driveway. Lower profile, gentler slope.
- Drainage-spec sloped curb -- a profile with a sharper back angle designed to channel high-volume runoff. Standard for Sexton Mountain's steeper streets.
The right type depends on what the curb has to do hydraulically. A standard 6-inch curb that handles drainage on a flat suburban street may overflow on a Sexton Mountain street during a 1-inch storm event. We size the gutter pan and back-angle to actual site grade.
Concrete Curbing Cost in 97008
Industry Baseline Range
| Scope | Cost Per Linear Foot | Typical Total |
|---|---|---|
| Extruded curb (subdivision/parking lot) | $5 to $12 | $1,500 to $20,000+ |
| Poured curb and gutter (commercial) | $14 to $30 | $5,000 to $50,000+ |
| Rolled mountable curb (residential) | $7 to $15 | $2,000 to $10,000+ |
| Curb repair/replacement (per section) | $200 to $800+ | varies by linear feet |
| Drainage-spec curb (high-grade streets) | $9 to $20 | varies |
Current Market Reality
The published ranges assume reasonable access for a curb machine, a clean site, and a single mobilization. 97008 jobs frequently fail those assumptions. Tight subdivision frontage, parked cars on the work zone, and the slope itself can force hand-trowel work where extruded curb would normally run -- which doubles labor cost. Subdivision replacement work that requires saw-cutting old curb, hauling debris, and core-drilling drainage features runs above baseline. Concrete mix prices have moved sharply in recent seasons; quotes older than 30 days should be re-validated.
Freeze-Thaw on Sexton Mountain
Beaverton's lower elevations see 30 to 45 freeze-thaw days a year; the higher reaches of Sexton Mountain (around 700 to 850 feet elevation) can see closer to 50 to 60 days. That's a meaningful difference in curb stress. Water enters a hairline crack at 35 degrees F, freezes overnight, and expands -- prying the crack wider. Every cycle weakens the curb.
Three mitigations matter on every 97008 curb job:
- Air-entrained concrete mix -- 5 to 7 percent entrained air to give expanding ice somewhere to go.
- Proper subgrade compaction -- a curb on uncompacted base settles, cracks at the settlement, and lets water in.
- Control joints every 10 feet -- extruded curb without joints cracks wherever the concrete decides to fail; control joints give the failure a planned location.
We spec all three on every 97008 job. For a full breakdown of curb longevity in wet Oregon climates, see our how long concrete curbing lasts article. For the cost comparison between extruded and poured systems, see extruded vs poured curb.
Picking a Curbing Contractor for 97008
What to verify before you sign:
- Oregon CCB license -- required, easy to verify on the state CCB website.
- Mix design -- the quote should specify PSI (typically 3,000 to 4,000 for curbing) and air entrainment percentage.
- Joint plan -- control joint spacing should appear on the quote.
- Drainage spec -- for any steep-grade work, the curb profile and gutter pan size should match the site grade.
- Insurance -- general liability and workers' comp.
- Cleanup and disposal -- the quote should specify haul-off of any saw-cut debris and old curb.
For broader pricing context across Oregon, our concrete curbing cost guide walks the full picture.
Get a Curbing Quote for 97008
Cojo runs curbing crews across Washington County and the Portland metro from our Hood River HQ and regional field operations. We hold an Oregon CCB license, carry general liability and workers' comp insurance, and quote against the actual site -- including a grade and drainage check for any Sexton Mountain or Murray Hill street. If you have failing curb on a 1990s subdivision, a new subdivision perimeter to install, or a residential drainage curb retrofit, request a quote or browse our concrete services page for scope detail.