I-405 - SB SR 900 to Coal Creek Pkwy SE - Paving Outside Lane

Project news


We repaved nearly 6 miles of the right lane of southbound I-405 from Coal Creek Parkway Southeast to State Route 900 as well as a portion of the on- and off-ramps along that stretch of interstate. Large trucks primarily drive on this right outside lane. Their weight wore down the asphalt more quickly than smaller cars and trucks, which tend to use the two left lanes in this area. The use by large trucks sped up the development of cracks, ruts and potholes since the lane was repaved in 2006. Without new pavement, the safety of the roadway in that lane may have been compromised before the I-405 Renton to Bellevue Project can realign and expand this part of I-405.

Needs & benefits

  • Economic: these repairs will preserve the lane and protect the supporting layers of the road beneath.
  • Safety: repaving will remove the potholes and ruts where water can collect.
  • Preservation: the new pavement adds structural support to the existing roadway until the I-405 improvement project begins.


Financial Data for PIN 140504E, 140525C
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $2,334
CWA $2,111
Total $4,445


Northwest Region Communications
15700 Dayton Ave. N.
Seattle, WA 98133

Small map of project area extending from Coal Creek Parkway SE south to SR 900 on I-405.

Example of rutting and cracking we will repair during this repaving project on southbound I-405 in 2018.
This is some of the rutting and cracking we fixed during this repaving project on southbound I-405 in 2018.