Work costing £100,000 has been completed on a bridge on the A6 at Milford.
Milfiord Bridge had the repairs carried out as part of a £1 million-plus spend on road repairs and improvements across the county this month by Derbyshire County Council.
Work included specialised concrete repairs to the underside of the footways and some re-pointing of the masonry arch.
A council spokesman said: “The work was done from a floating pontoon on the river in order to access under the bridge and minimise disruption to traffic.”
The money is part of a £35 million package Derbyshire County Council is spending on improving the roads in 2013/14.
Councillor Dean Collins, deputy cabinet member for jobs, economy and transport, said: “We are committed to repairing and improving roads and pavements across the county - it’s what local people want and expect.
“We want to build a strong economy that creates jobs and supports businesses and a thriving economy needs an efficient transport network.”
During July, work to improve roads is being carried out on behalf of the county council. In Amber Valley a total of £400,000 has been spent on repairs to bridges and roads.
This has includes work to Butterley Station Bridge in Ripley, costing £150,000, and new traffic lights at A609 Main Road/Ryknield Road, Horsley Woodhouse, at a cost of £150,000.
The total cost of road improvements in July was £1,161,000.
For further information about roads, including where current and future roadworks are taking place visit derbyshire.gov.uk and check out the interactive map.
Other areas to benefit from improvements by the county council have included Bolsover, Hatton, Ilkeston, Long Eaton and Chesterfield.