Construction takeoff · Maintenance of traffic

Takeoff plus traffic control on your Mac.

Measure quantities and draft maintenance-of-traffic (MOT) layouts in one Mac workspace, starting with your PDF plans.

Getting started →

Available now on the Mac App Store. Try it free for 7 days on the monthly plan. Requires macOS 14 or newer.

Centerline on a Mac with an asphalt paving area takeoff on a sample plan, the area takeoff settings panel, and a Takeoff panel listing quantities and grand totals

One set of tools.

Construction takeoff and maintenance-of-traffic (MOT) plan drafting for Mac.

Centerline Totals view showing asphalt paving, pavement edge, and utility adjustment quantities with grand totals and CSV and XLSX export buttons

01 / MEASURE

Turn drawings into quantities.

Calibrate against a known distance, then create linear, area, and count takeoffs. Save an editable project and export quantities or marked-up PDFs.

Traffic control layout sheet in Centerline with cones, a hatched work area, Road Work Ahead and Right Lane Closed signs, an arrow board, and a work-area note, with MOT placement tools in the sidebar

02 / DRAFT

Build out the traffic plan.

Place MOT and temporary traffic-control symbols (signs, cones, drums, barricades, arrow boards, pedestrian control), notes, and hatched work areas alongside your plans. Review each layout against the requirements of your project and reviewing authority.

Built for Mac

Centerline is a Mac app for construction takeoff and maintenance-of-traffic plan drafting.

Construction takeoff

Turn drawings into quantities with linear, area, and count takeoffs.

Maintenance of traffic

Use the MOT / TTC Library to place traffic-control symbols and add notes or work areas.

Your plans stay local

Centerline does not automatically upload your plans. You choose which files to open, save, export, or share.

Pricing

One set of tools. Two billing options. Free download.

$9.99 / month

7-day free trial, then $9.99/month. Both plans include the same takeoff and MOT tools.

$79.99 / year

Billed upfront annually.

An active subscription is required to use the editor. U.S. App Store pricing; Apple displays the final price at purchase. The 7-day free trial applies to the monthly plan only and converts to the $9.99/month subscription unless canceled in your Apple Account at least 24 hours before the trial ends. Subscriptions renew automatically unless canceled through your Apple Account at least 24 hours before the end of the current period. Optional AI requires your own API account; cloud hosting is separate.

Common questions

What are the system requirements?

macOS 14.0 or later. Available on the Mac App Store.

How do I restore or cancel a subscription?

Use Centerline > Subscription to restore purchases or manage your plan. Restore using the same Apple Account that made the purchase. Apple handles billing and cancellation; you can also manage or cancel through your Apple Account settings.

How do I keep my work editable?

Save a Centerline project as well as any exported PDFs or reports. Canceling a subscription does not delete your local projects.

Are AI and cloud services included?

AI suggestions require your own Perplexity API credential and may incur separate charges. Cloud publishing requires a compatible server; hosted cloud service is separate.

Does Centerline certify my MOT layout?

Centerline is a drafting and measurement tool. Verify scales and quantities before use. MOT layouts and symbols require review against the applicable project and agency requirements; Centerline does not certify compliance or provide an engineering seal.