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ITD opens Karcher Overpass two months ahead of schedule

Posted: 7:54 AM, Oct 15, 2019
Updated: 2019-10-15 09:54:07-04
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NAMPA, Idaho — Construction on the Karcher Overpass over I-84 will be completed ahead of schedule. The Idaho Transportation Department is planning to open for traffic this morning, Tuesday Oct. 15 at 9 a.m.

The new overpass includes one lane in each direction, wider shoulders and a sidewalk on the north side of the overpass. The opening comes after a seven-month closure, allowing crews to demolish and rebuild the original 1966 structure. The overpass was replaced to make room for additional lanes on I-84 in Nampa.

Final rail installation on the bridge and other cleanup activities will occur over the next month.

  • This work is part of a multi-year process to improve I-84 in Canyon County. Construction in 2019 and 2020 will include:
  • Adding a third lane to eastbound and westbound I-84.
  • Adding a fourth “auxiliary” lane in both directions between interchanges.
  • Replacing the Northside Interchange with a Single Point Urban Interchange.
  • Rebuilding several bridges over the railroad, irrigation canal and Mason Creek.
  • Widening the eastbound off-ramp and modifying signals at the Franklin Boulevard Interchange.
  • Rebuilding the Middleton and Ustick bridges over I-84

Future years of construction will include replacing the Middleton and Ustick overpasses and widening I-84 to Franklin Road in Caldwell.