Delineator Installation in Gresham, OR 2026

Gresham's parking lots run a high mix of suburban retail strips along Powell Boulevard and Burnside Road, MAX-station park-and-rides, and aging commercial pads on Division that need channelization upgrades during recoats. Cojo installs delineators across the city tuned to pavement age and traffic mix rather than ordered off a catalog default.

The 60-word direct answer: Cojo installs delineators on Gresham parking lots, drive-thrus, and pickup zones per MUTCD Section 3F.04 color rules and Gresham Community Development Code site-plan review. Standard spec is engineered urethane flex posts on surface-mount spring bases with ASTM D4956 Type IV retroreflective sheeting. Project sizes run 8 to 50 stations.

Why Gresham Lots Need a Specific Spec

Three Gresham-specific factors shape most projects.

1. Mature pavement. A high share of Gresham retail pads run 12 to 20 years old. Older asphalt requires chemical anchors instead of mechanical wedge anchors -- the binder oxidation reduces wedge-anchor grip below acceptable retention thresholds.
2. East-side weather. Gresham averages 25 to 40 freeze-thaw cycles per year, slightly higher than west-of-the-river Portland metros. Polymer recovery memory degrades with cold cycles -- engineered urethane outperforms standard urethane meaningfully through a Gresham winter.
3. MAX-corridor pedestrian volume. Properties along the MAX Blue Line corridor see meaningful pedestrian crossing traffic, which raises the channelization bar on accessible-route compliance.

What Code Applies to Gresham Parking-Lot Delineator Work?

Federal MUTCD

Color rules per MUTCD Section 3F.04: white on the right of travel, yellow on the left, blue at hydrants. Sheeting type per ASTM D4956. NCHRP 350 or MASH crash-test compliance for posts near public streets.

Gresham Community Development Code

Gresham's Community Development Code treats parking-lot channelization as part of site-plan review. Lots connecting to a public street require staff review of circulation and accessible-route geometry; Cojo handles the spec submittal.

ADA Accessible Route

ADA Std 402 and ADA Std 307 protruding-object rules apply on any lot with accessible parking. Posts inside an accessible route must have cane-detectable bases or sit fully outside the 27-to-80-inch protruding-object zone.

What Spec Does Cojo Default To on Gresham Projects?

Standard parking-lot spec for Gresham, with anchor adjustment for mature pavement:

• Post: 48-inch engineered urethane flex post (drive-thrus 36 inches)
• Base: surface-mount spring base, 4 stainless-steel 3/8-inch wedge anchors on pavement under 10 years old; chemical anchors on pavement 10-plus years old
• Sheeting: ASTM D4956 Type IV high-intensity prismatic
• Color: white on right of travel, yellow on left, per MUTCD 3F.04
• Spacing: 15 to 25 feet on tangent, 6 to 8 feet on tight curves

Mature-pavement chemical-anchor spec adds $4 to $9 per post in material cost relative to wedge anchors but extends installation life from 5-to-7 years to 10-plus years.

What Service Areas Does Cojo Cover Around Gresham?

• Powell Boulevard / Powell Valley corridor
• Burnside Road retail spine
• Division Street commercial
• Rockwood / 181st-188th corridor
• Centennial / 162nd
• Wood Village (immediately adjacent)
• Fairview (immediately adjacent)
• Troutdale (immediately adjacent)

Same-week mobilization on jobs of 8 posts or more is the norm.

Gresham Project References

• 18-post drive-thru channel, Powell Valley QSR, March 2026 -- 36-inch engineered urethane on surface-mount spring bases. Pavement was 14 years old; spec used chemical anchors with 28-day cure schedule.
• 26-post park-and-ride channelization, MAX corridor adjacent, January 2026 -- 48-inch engineered urethane delineating bus loop from passenger-vehicle pickup.
• 12-post entry-loop install, Division Street retail center, December 2025 -- 48-inch engineered urethane on Type IV sheeting. Replaced traffic-cone deployment that had drifted out of position weekly.

How Long Does a Gresham Install Take?

Standard crew throughput, with mature-pavement adjustment:

• Survey and site verification: 1 to 2 hours per lot
• Anchor drilling: 4 to 5 minutes per post (newer asphalt), 8 to 12 minutes (chemical anchor on aged asphalt with cure)
• Base set, post install, sheeting verification: 5 to 8 minutes per post
• Total: 10 to 16 posts per crew-shift on chemical-anchor spec

A 22-post job typically completes in 1 to 1.5 shifts on aged Gresham pavement vs 1 shift on newer pavement.

What Permits Are Needed for Gresham Parking-Lot Delineator Work?

Most parking-lot work does not need a separate permit because parking lots are private. Exceptions:

• Tenant-improvement permits with lot work: notification through Gresham Building Division
• Right-of-way work near a public street: ODOT or Gresham municipal permit

Cojo handles permit coordination on projects that require it.

Get a Gresham Delineator Quote

Cojo installs delineators across Gresham parking lots, drive-thrus, and MAX-corridor commercial properties per MUTCD spec and Gresham site-plan review. Aging pavement gets chemical-anchor spec; newer pavement gets standard wedge anchors. Contact Cojo for a Gresham delineator install quote.