Under Construction: I-81/Route 8 (Exit 114) Bridge Replacements - Montgomery County/Christiansburg

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The primary purpose of this project is to replace the two Interstate 81 bridges over Route 8 that are nearing the end of their service life.

To replace these bridges, it is anticipated that mainline I-81 would be realigned, the exit 114 ramps adjusted and the grade changed at the bridges approaches.  Currently, no major improvements to Route 8 are planned as part of this project.

During preliminary design of the proposed bridges over Route 8, concepts for potential future modifications of the interchange were considered. These included teardrop roundabout diamond, diverging diamond and conventional diamond interchanges.

This will be a design build project and it is fully funded.


With the replacement of these bridges, I-81 will be realigned with a grade change at the approach to the new bridges and modifications to the exit ramps. 


Contact Info:

Duane Mann
(540) 378-5055

Lat/Long: 37.1160096, -80.4235056

Locality: Montgomery

Page last modified: Nov. 15, 2021