Just had a pootle around the town, very unusual for me to do that, and took a couple of shots of the "in progress" Prittle Brook Greenway.
First of all you'll find the works currently here,
Clicky. If you follow the path to the right you get to Victoria Avenue. Presumably you'll then get the usual Cyclists Dimount and have to walk across the road to get to the park or the cycle path to head south into town.
This shot looks NWish, Gainsborough Park on the right. Where the kids are is another section of the Greenway.
Now SEish and the disused DSA test centre to the right and the closed off path. Approx. two metres wide from fence to grass. AFAIK it's a shared path.
The Victoria Avenue entrance. By the look of things there will be block paving, like from where the other shots were taken or tactile paving, and probably tarmac between the entrances.
P.S. I forgot to mention that I rode the new section of seafront path from the ramp at Adventure Island all the way until the roadworks, just past Shorefield Ave, sent me onto the road again. It feels wonderfully wide going in the same direction as the road, east to west, but no way is wide enough for two opposing lanes! No problem overtaking a slower cyclist and the few peds, and skaters, didn't pose a problem either but I didn't get an eastbound cyclist to go head to head with. It's quite lumpy and most of the drains are sunken!
The white line separating the motorised from the cycle path is just a slightly raised convex shaped line, possibly has anti slip grit embedded but I didn't stop to get a closer look. I'd imagine in the wet it'll be like ice!