Estimate the Section 74 charge a highway authority could apply if streetworks overrun their permitted period. Enter the road category, works location and overrun days for an instant working estimate.
NRSWA road category, as designated by the highway authority under the permit.
Carriageway rates are tiered and traffic-sensitivity applies. Footway/verge rates are flat by road category — traffic-sensitivity doesn't change the figure.
Since 5 Jan 2026, overrun charges apply to every calendar day — including weekends and bank holidays — for permits starting on or after that date. For older permits under the previous rule, count working days only.
A working estimate only — highway authorities may reduce, waive or otherwise adjust charges (Regulation 10), and some overruns qualify for a mitigated £100 rate. Not a substitute for the authority's own assessment.
IMPACT reviews Section 74 overrun charges on permits it manages and builds the case for mitigation or defence where the overrun wasn't reasonably avoidable.