ADOT is responsible for the construction, operation, management and maintenance of the State Highway System (SHS) which comprises more than 21,000 lane miles and is valued at more than $20 billion. The dependable and efficient operation of this transportation network is vital to Arizona’s economic competitiveness and quality of life. Moreover, the safety and welfare of the travelling public depends on the successful management of the transportation assets on the SHS and the National Highway System (NHS).
The majority of ADOT’s bridge and pavement infrastructure will reach the end of its normal lifecycle over the next 10 years. With proper preservation treatments, the life of this infrastructure can be extended. However, as Arizona’s highway system ages, the resources needed to maintain it will increase. This makes the identification and implementation of strategies that preserve existing assets while controlling costs essential to sustaining a balanced, fiscally sound state highway program.