"improved roads" is correct and usable in written English.
You can use it when referring to increased improvements to existing roads, or to describe roads that have been newly built or recently renovated. Example sentence: The city has recently made improvements to the roads, resulting in improved roads with greater safety features.
On top of tax cuts, states boosted funding for schools, improved roads and bridges, extended health coverage to poor children and helped senior citizens with prescription drug expenses.
The migratory pollinating business started about 50 years ago, when improved roads and increased demand made it practical to truck bees long distances.
The various communities north of London will also get improved roads - a widened M1 has been recommended to serve Luton and Milton Keynes, while Stansted-Cambridge could get a widened M11 and an upgraded A14 East-West dual carriageway.
For instance, improved roads in Africa have helped cut the time it takes for goods to go from farms on that continent to stores in Europe to 4 days, compared with 10 days not too many years ago.
Mr. Miyet and several administration officials said the lack of money in Congo might slow the creation of communications networks, a system to control air traffic, improved roads and livable barracks.
Maryland had built improved roads in its western panhandle, the part squeezed between West Virginia and Pennsylvania, to try to stimulate economic growth there, but the growth failed to follow.
Early turnpike tolls led to improved road conditions so that transport eventually became cheaper.
"Investment would be attracted to the areas alongside the improved road.
Four priorities are identified: "less crime, improved road safety, protected communities, more valued services".
Plans for a railway station and improved road access to the east Kent airport have already been drawn up.
As a lumber merchant, Mathieu promoted improved road access in the region.
