The cost per HSIP project in 2015 ranged widely. Some projects were small in scope and cost, such as replacing signs on a particular route. Others were higher cost projects, such as widening a highway or reconfiguring an intersection. Figure 2 shows the breakdown by project cost, grouped into general categories with breakpoints at $100,000, $500,000, and $1,000,000.
Figure 2 : Number of Projects by Project Cost
Roughly two-thirds of the projects had costs less than $500K. A small percentage (12 percent) fell into the $500K - $1M category. The remaining 22 percent were high cost projects totaling $1M or more. The top five sub categories selected for these high cost projects are:
- Widen shoulder – paved or other (139 projects ranging from 0.3 to 21.4 miles treated)
- Auxiliary lanes – add left-turn lane (46 projects)
- Barrier – cable (30 project ranging from 0.1 to 29 miles treated)
- Rumble strips – edge or shoulder (30 projects ranging from 1 to 1300 miles treated)
- Modify traffic signal – modernization/replacement (27 projects)
In 2013 and 2014, the breakdowns were similar. About two-thirds of the projects had costs less than $500K, about 13 percent fell into the $500K – $1M category, and the remaining 20 percent were more than $1M.