We install and maintain speed humps across Oregon — the I-5 corridor from Portland to Medford, the Willamette Valley, the high-desert cities of Bend and Redmond, and the coast. What's below: the regulatory framework at city, county, and state level; the difference between public-street and private-property installs anywhere in Oregon; the climate-driven design choices that vary by region; and our full service-area map.
How are speed humps regulated in Oregon?
Three layers govern speed-hump installs in Oregon. The state framework is set by the Oregon Department of Transportation residential traffic-calming guidance and statewide statutes including Oregon Revised Statutes (ORS) Chapter 810 (Road Authorities) and ORS 811.555 (Stopping standing or parking prohibitions). City and county jurisdictions implement their own residential traffic-calming programs within that framework. Private streets are governed by ORS Chapter 94 (Planned Communities) and the underlying property-owner authority.
Oregon's Statewide Framework
State authority and ODOT guidance
ODOT's residential traffic-calming guidance recognizes speed humps, speed cushions, speed tables, raised crosswalks, chicanes, and curb extensions as approved devices on local roads. ODOT does not generally permit speed humps on state-numbered routes (highways with an OR or US prefix) -- those routes carry too much through-traffic for the device. State-route calming is handled through different tools (signal timing, lane width changes, signage).
County vs city authority
In Oregon, road authority for any given segment sits with one of three entities:
- State (ODOT) -- state highways and ODOT-maintained routes
- County -- unincorporated road segments
- City -- streets within incorporated city limits
Speed humps require approval from the road authority that owns the segment. For unincorporated county roads, the county public-works office is the approval body. For city streets, the city traffic-calming program. For private property, the owner.
Statutory references
- ORS 810 -- governs road-authority allocation
- ORS 811.555 -- prohibits stopping, standing, or parking that obstructs traffic; relevant to humps because parking on a hump is potentially obstruction
- ORS Chapter 94 -- planned communities, governs HOA-controlled private roads
- ORS Chapter 30 -- tort liability framework for premises claims
Climate-Driven Design Choices Across Oregon
Oregon's climate divides roughly into four zones for hump-design purposes.
I-5 corridor (Portland to Eugene to Medford)
Wet winters and mild summers. Asphalt humps perform well; freeze-thaw is moderate. Standard 3-inch parabolic profile is the default. Repaint cycle: 18 months water-based, 4 years thermoplastic.
Willamette Valley side (Salem, Corvallis, Albany)
Same as I-5 corridor with slightly less rain. Same design defaults.
Central and Eastern Oregon (Bend, Redmond, Sisters)
Heavy freeze-thaw, snow plowing, dry summers. Parabolic profile (no sharp edges) is essential to avoid plow damage. Modular rubber humps are sometimes a better fit because they allow seasonal removal. Asphalt repaint cycle shifts shorter due to UV exposure (12 to 18 months water-based).
Coast (Astoria to Brookings)
Heavy rain, salt air, mild temperatures. Asphalt humps perform well but need more frequent crack-fill due to constant moisture. Reflective markers are critical due to fog.
Public-Street Install: City Program Process
Most Oregon cities run a residential traffic-calming program. The general flow:
- Application submitted by resident or neighborhood association
- City conducts speed and volume study (free in most programs, 30 to 60 days)
- Eligibility determination
- Petition or vote of affected residents (typically 50 to 75 percent threshold)
- Emergency-services review
- City approves design and funds construction
- Install scheduled (often 6 to 18 months from application)
Cojo's Portland, Salem, and Eugene city pages cover the local program details for each market.
Private-Property Install: Direct Authorization
For HOA-controlled streets, apartment complexes, business parks, and private commercial drives, no city approval is required. The decision sits with the property owner or HOA board. Cojo's typical timeline from initial call to installed hump on a private property is 2 to 6 weeks anywhere in Oregon.
County-Maintained Road Install
Unincorporated county road segments are approved by the county public-works office. The process sits between city and private:
- County conducts a traffic study (sometimes funded by the requestor)
- Resident petition required in most counties
- County engineer approves design
- Emergency-services review
- Install funded by county or by petitioner cost-share
Counties Cojo regularly works in: Multnomah, Washington, Clackamas, Marion, Lane, Linn, Benton, Deschutes.
Cojo's Oregon Service Area
Cojo serves the full state. Common project zones:
I-5 corridor
- Portland metro -- Portland, Beaverton, Hillsboro, Tigard, Tualatin, Lake Oswego, West Linn, Wilsonville, Gresham, Milwaukie, Oregon City
- Mid-valley -- Salem, Keizer, Albany, Corvallis, Lebanon, Stayton, Silverton
- South valley -- Eugene, Springfield, Cottage Grove, Creswell
- Southern Oregon -- Roseburg, Grants Pass, Medford, Ashland
Central Oregon
- Bend, Redmond, Sisters, Madras, Prineville
Coast
- Astoria, Seaside, Tillamook, Newport, Florence, Coos Bay, Brookings
Eastern Oregon
- Pendleton, La Grande, Baker City, Ontario, Burns -- project-by-project
Speed Hump Cost in Oregon (Statewide Baseline)
Industry Baseline Range
| Item | Range |
|---|---|
| Single hump install (urban residential street) | $2,000 to $5,000+ |
| Single hump install (private property) | $1,800 to $4,200+ |
| Series of 3 humps (same site) | $1,500 to $3,500+ per hump |
| Annual inspection | $200 to $500+ per site |
| Re-paint chevrons (water-based) | $80 to $180+ per hump |
| Re-paint chevrons (thermoplastic) | $250 to $500+ per hump |
| Single hump removal | $1,500 to $3,500+ |
Current Market Reality
Costs vary across Oregon by mobilization distance, local labor rates, and traffic-control overhead. Portland and Bend run highest; Salem, Eugene, and Corvallis sit in the middle. Coastal and eastern Oregon installs add a mobilization premium when the contractor pool is smaller. See speed hump cost guide for the full breakdown.
Get a Statewide Quote
If you are an HOA board member, property manager, school facilities lead, or business operator anywhere in Oregon, Cojo can provide a free site review and a quote. See the speed humps guide for the engineering background, speed hump installation in Portland and speed hump installation in Salem for the major-market specifics, paving contractor Portland for the broader Cojo statewide service area, or asphalt maintenance services for the full install scope.