Since completing my new river banks I realised two things:
1. I didn't have enough bridges to provide the scenery options I might need for future 28mm games
2. The bridges I did have were now compromised as they weren't designed to work with 9-10mm banks - their centre supports wouldn't reach the water!
So, to fix problem one I decided to find a decent stone bridge model and after some web surfing I settled on the Italeri plastic kit. This provides a very simple by effective model, with a road width just under 80mm, a span of about 130mm (more than enought for my 90mm rivers) and total length of about 230mm. I ordered mine via Amazon and it came within a couple of weeks - from Hong Kong, for a total of under £14 including P&P. Not bad.
Here are the kit components, 2 sides plus a top roadway and a underside arch, all nicely detailed with stone and paving.
With box cover art to make sure I put it together properly!
Ta daa! It took about 20 minutes to put it together, requiring a small amount of prep to ensure the arches went fully into the slots on the side sections. I used plastic cement, the same I've used for hard plastic figures, and it worked very effectively as you'd expect. I used the old rubber band trick for holding it together while the blue dried, and the result is a pretty sturdy bridge ready for undercoating and some fast dry-brushing.
Slightly blurry picture of the finished article. Painting took about 30 minutes. Black undercoat followed by a mid grey and then a light grey build up of dry-brushes. I then used a pale yellow/brown shade for the feature blocks and covered everything with a diluted GW brown wash. Finally I gave it all a light dry-brush of Vallejo's Iraqi Sand, which softens everything and ties into all my terrain and other scenery as I use it for pretty much everything.
To solve problem 2 I added the necessary depth to the centre supports on my other 2 bridges. The (Hovels?) stone bridge received a stack of thick card pieces, stuck together and carved to shape. They then had a scraping of quick-dry plaster before being painted to a reasonable match for the existing stonework. The Renedra wooden bridge had a couple of plasticard struts added, which were painted to match. Now my troops can cross and re-cross my rivers with abandon!