Hillsboro marina parking lot striping work runs at inland reservoir facilities, not at coastal harbors. Henry Hagg Lake (Scoggins Reservoir) at Scoggins Valley Park is the primary trailer-launch facility in the Hillsboro service area, with smaller Tualatin River put-ins handling kayak and canoe traffic. Boat-trailer stall geometry, ADA water-access aisles under Section 1003, and Washington County Parks procurement cycles all shape what a Hillsboro marina striping project actually requires. This article walks through the spec frame and what the work costs in 2026.
Henry Hagg Lake and the Scoggins Valley Park Frame
Henry Hagg Lake is a 1,113-acre reservoir behind Scoggins Dam, operated by Washington County Parks. The main trailer-launch facility at Boat Ramp A and Boat Ramp C carries the bulk of trailer-launch volume from late April through September. Annual visitation runs 350,000 to 500,000 -- enough to qualify the lot for the full ADA Section 1003 compliance treatment and a regular striping refresh cycle.
The lot at Boat Ramp A has roughly 40 to 60 boat-trailer stalls plus secondary parking; Boat Ramp C runs smaller. Tualatin River put-ins (Browns Ferry Park, Cook Park downstream) handle kayak and canoe traffic at smaller dedicated lots. The right striping plan for a Washington County reservoir-edge lot starts with a walk during summer pool to count usable launch-lane positions and measure lot footprint. See Hillsboro parking lot striping work for the broader striping context.
Boat Trailer Stall Geometry
A boat-trailer stall is roughly 10 by 40 feet to fit the trailer plus tow vehicle. Henry Hagg Lake's main lots use pull-through striping where the topography allows; the lower bench at the ramp itself sometimes runs back-in geometry to fit the property line. A typical Washington County boat-ramp lot has 30 to 60 boat-trailer stalls plus secondary parking for vehicles without trailers.
The doubled stall footprint versus retail parking is what catches contractors who price marina work as standard parking lot striping. A 200-stall retail lot would fit roughly 100 boat-trailer stalls on the same footprint -- and the linear feet of paint required is similar even though the stall count is halved.
ADA Water-Access Aisle (Section 1003)
ABA Section 1003 covers recreation facilities including boat launches. The accessible route from a designated parking space to the water-access point must be at least 60 inches wide and slope no more than 1:20 unless equipped with handrails. The accessible parking space is sized for a van-accessible vehicle with a 96-inch-minimum access aisle.
Henry Hagg Lake's main lots have accessible boat-trailer stalls in place; verification on a permit walkthrough confirms the route slope is within tolerance throughout the seasonal pool range. The accessible stall is wider (12 to 14 feet) with an 8-foot access aisle striped to ADA standards. The striping spec for the accessible stall, access aisle, and curb ramp at the lot-to-ramp transition is the load-bearing inspection item.
Restripe Cycle for a Washington County Marina Lot
Hillsboro sits on the Tualatin Plain with annual rainfall around 38 inches and clay-heavy subgrade at most reservoir-edge sites. A reasonable restripe cycle for a Washington County boat-trailer lot is 24 to 36 months for high-traffic lots (Henry Hagg Boat Ramp A) and 36 to 48 months for smaller put-ins.
Paint selection matters. Waterborne acrylic latex is cost-effective for short-cycle restripe; thermoplastic costs more upfront but holds up to trailer-tire wear and water exposure longer. The right call on a Washington County reservoir lot is usually thermoplastic at the boat-trailer stall lines and waterborne acrylic at secondary markings. The Hillsboro hotel sealcoating cycle covers similar long-cycle maintenance economics for adjacent commercial property managers.
Industry Baseline Range for Hillsboro Marina Striping
Pricing depends on lot size, stall count, ADA scope, and whether the project includes prep work (crack-fill, patch, sealcoat) before striping.
Industry Baseline Range
| Scope | Cost Per Lf or Stall | Typical Total |
|---|---|---|
| Restripe boat-trailer stalls (waterborne) | $0.30 to $0.60 per lf | $1,400 to $7,000 |
| Restripe boat-trailer stalls (thermoplastic) | $1.50 to $3.50 per lf | $6,500 to $28,000 |
| ADA accessible stall + access aisle + symbol | $250 to $500 per stall | $250 to $2,500 |
| Full lot restripe including ADA and signage | $0.05 to $0.20 per sq ft | $2,000 to $20,000+ |
Current Market Reality
Hillsboro marina striping pricing in 2026 reflects paint cost increases of roughly 20 percent since 2019, thermoplastic material that has roughly doubled at the supply level, and Washington County Parks procurement cycles that limit fast-turn work. A 40-stall boat-trailer lot that priced at $4,000 for a waterborne restripe in 2019 commonly bids $5,500 to $7,500 today. ADA compliance work on a non-compliant legacy lot adds significantly because the accessible stall, access aisle, and route-to-ramp slope often require pavement work, not just striping. See Oregon asphalt cost benchmarks for the broader cost frame.
Working With Washington County Parks
Washington County Parks operates Henry Hagg Lake and Scoggins Valley Park under a capital cycle that includes a parks-specific RFP and contractor pre-qualification process. A parks director coordinating a striping refresh typically pulls 2 to 3 quotes against a written scope; the right scope spec includes ADA compliance details, paint type, stall count, and seasonal pool-level reference. Smaller Tualatin River put-ins under city or special-district control may run direct procurement with shorter lead time.
Cojo's broader asphalt maintenance services and the RV pad excavation guide cover related work that often pairs with marina-lot maintenance.
Talk to Cojo About Your Hillsboro Marina Lot
If you operate a Washington County boat-ramp lot or private marina and the boat-trailer stalls have faded, the ADA accessible route to the ramp is unclear, or the lot has not been restriped in three or more years, the next step is a launch-ramp walk. We will measure stall geometry, confirm ADA compliance scope, document the route from parking to ramp, and write a scope with a Washington County-specific range. To start, schedule a launch-ramp walk and we will be at the ramp lot within the week.