Infrastructure Costs

Understanding the True Cost of Transportation Infrastructure
There is always talk about money when it comes to improving infrastructure. Therefore, it is important to put into perspective just how much average repairs and improvements cost.
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Cost of Infrastructure Improvements

Average costs for various types of transportation infrastructure projects in South Carolina
Road Resurfacing
The average cost of resurfacing a two-lane road is approximately

$1M

per lane mile
New Road Construction
Full construction of new roadway including grading, drainage, and paving

$2M - $4M

per lane mile
Bridge Replacement
The average cost of a bridge replacement depends on the roadway and design scope.

secondary road bridges: $3M
primary road bridges: $25M

Interstate Widening
depending on the project, interchange upgrades can cost anywhere from

$60M+ - $100M+

per lane mile

Cost of Infrastructure Improvements

Maintenance vs. Reconstruction
Preventive maintenance costs significantly less than full reconstruction. Delaying maintenance can result in costs up to 5-10 times higher when roads deteriorate beyond repair.
Long-Term Planning
Understanding infrastructure costs helps policymakers and citizens make informed decisions about transportation funding priorities and long-term investment strategies.
Economic Impact
Poor road conditions cost South Carolina motorists billions in vehicle repairs, increased fuel consumption, and lost time due to congestion and detours.
Funding Challenges
With rising construction costs and limited funding sources, South Carolina faces ongoing challenges in maintaining and improving its extensive highway system.

Keep South Carolina Moving Foward

@ 2026 South Carolina Alliance To Fix Our Roads