Maintenance work includes: removing dirt and sundries on the road surface and keeping the road surface clean and tidy; Eliminate road water, snow, ice and sand accumulation, spread anti-skid materials, dust suppressants or compact snow to maintain traffic; Sand pavement leveling and rutting repair; Evenly sweeping surface sand on the gravel pavement, adding surface sand, sprinkling water to moisten, leveling waves and repairing the wear layer; Treatment of asphalt pavement flooding, blockage, cracks, looseness and other diseases; Daily joint cleaning, joint filling and joint plugging of cement concrete pavement; Repair and painting of kerbs. Minor repairs include: local treatment of frost boiling deformation of gravel road and addition of stable materials; Repair the pits, grooves and subsidence on the broken gravel pavement, repair the wearing layer or sweep the whole section to spread sand; Treatment of bump at the top of bridge head and culvert; Asphalt pavement repairs pits and subsidence, and deals with waves, local cracks, gnawing edges and other diseases; Local repair of cement concrete pavement slab. Arrange shoulders and slopes, trim shoulders, isolate vegetation, remove sundries and keep roads clean and tidy; Dredge the side ditch and keep the drainage system unblocked; Remove weeds on retaining walls and slope protection that hinder the function of facilities, repair expansion joints, dredge drainage holes, and remove loose stones.

Minor repair operations include: small-section excavation of side ditches, intercepting ditches or laying side ditches in stages; Remove sporadic landslides, fill gaps in subgrade, and handle slight subsidence and frost boiling; Treatment of bridge head wiring or bump at the top of bridge head and culvert; Repair the local damage of retaining wall, slope protection, slope protection road, drainage trough, guardrail and anti-ice and snow facilities; Locally reinforce the shoulders. Every component of expressway (including ancillary facilities) should carry out frequent daily operations as required every year, in order to maintain the original good state and service level of expressway. Daily maintenance projects mainly include: cleaning the road surface and other parts; Minor damage repair and sporadic replacement of facilities; Cutting grass and pruning branches; Snow and ice removal in winter; And emergency treatment to restore the occasionally interrupted traffic.