INDOT calls the employee's email "an inappropriate use of INDOT resources."
The Bloomington company halted work on the project earlier this month because the private developer owed Crider and Crider more than $2.3 million.
Bloomington's mayor says at least one subcontractor walked off the job Friday because of an ongoing pay dispute.
The I-65 project between Greenwood and Franklin has caused delays since April 2015.
INDOT is hosting a series of meetings for Indiana Farm Bureau members to discuss road and bridge funding.
The Hoosier State Line runs from Indianapolis to Chicago.
Police say drivers should avoid the southbound lanes of State Road 37 between Martinsville and Bloomington between noon and 3:30 p.m.
Roadwork this year is estimated to cost $850 million.
Attendees will be able to ask questions about the stretch of I-69 extending from Martinsville to Indianapolis.
INDOT has recommended a single route for the final leg of I-69, section six from Martinsville to Indianapolis.