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Missouri Department of Transportation

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what's it cost? a look at funding transportation projects

roadscars on highway


Below are some examples of road and highway projects and the estimated costs to complete.


I-70 Rebuild:

Project: Rebuilding and expanding Interstate 70.

Cost: $2 billion to $4 billion (depending on the scope of the project)

Click here for more on this project.



Average Costs to Build or Maintain Missouri Highways:


Cost to Resurface (per lane mile)*

Major Highway                $157,000

Interstate                       $164,000


Cost for New Construction (per mile)**

Two-Lane Highway        $1.8 million

Four-Lane Highway        $4.6 million



* Not including shoulders. Includes pavement, traffic control, permanent pavement

   marking, rumble strips, pavement repair, guardrail and signage.


**Includes grading, drainage, pavement, bridge and all incidental costs.



For more information on MoDOT projects: modot.org/plansandprojects










MoDOT maintains nearly 10,400 bridges on the state system. Below are some examples of bridge projects and the costs of maintaining the system.


Columbia I-70 Bridges Project:

Project: Replace I-70 bridges over Business Loop 70/West Boulevard, Garth Avenue and Mo Route 763/Rangeline Street in Columbia, Mo.

Cost: $18 million

Click here for more on this project.



Average Costs to Build or Maintain Missouri Bridges:


Cost to Rehabilitate                                

Minor Bridge                  $325,000

Major Bridge                  $15 million


Cost to Replace                                      

Minor Bridge                  $655,000

                                                                                                      Major Bridge                  $10-$250 million



                                                                                                      For more information on Missouri bridges: modot.org/bridges




maintenance costs



Average annual maintenance costs for maintaining the transportation system include:



Snow Removal: $45 million (with 175,000 tons of salt used per winter)


Mowing: $20.2 million


Litter Removal: $5.7 million


Signals: Traditional traffic signals cost between $100,000 to $150,000 to install and about $4,100 a year to maintain.


Signs: Between 80,000-100,000 signs are needed each year to replace existing signs that are worn out or damaged.


These signs are produced by private sign fabricators contracted to provide sign manufacturing services for MoDOT maintenance operations.


There are approximately 800,000 signs on the state highway system.


Costs for these signs vary because they come in many shapes and sizes, but the

average stop sign costs $400 to make and install.


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Missouri Department of Transportation
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Jefferson City, MO 65102
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