The following is Federal Way’s current and anticipated major street construction (4-19-24) 

(Note: minor road and/or short term street impacts are not reflected here).

Poster Educating Public on Driving Safety in Construction Zones


Military Road South, HWY 18 to S 320th – Lanes Reduced, 5/8-5/15 

The City will be planing and paving Military Road South from HWY 18 to S 320th from 5/8 to 5/15. Lanes will be reduced in both directions Monday through Friday, 7 am to 6 pm, so expect higher than normal traffic. 

Lakehaven Water and Sewer District – Watermain Replacement – 21st Ave SW – SW 356th to SW 348th Street- 24/7 Lane Closures Start April 2, 2024

Lakehaven Water and Sewer District has contracted with RW Scott Construction Company to reconstruct the water main in 21st Ave SW between SW 348th St and SW 356th St starting on April 2, 2024.  This work is needed to eliminate older infrastructure before the City of Federal Way overlays the street in June, 2024.  The center lanes of 21st Avenue SW will be closed to all traffic for 24 hours a day, starting on April 2 for approximately 2 to 3 weeks, however one lane of traffic in each direction will be open at all times.  After the new water main has been constructed and connected to the existing network of pipes, then the traffic control will be as needed and the center lanes will be opened to the public.  This closure is necessary to facilitate the installation of the new water main.  The closure will allow for accelerated construction of the watermain, and will be a shorter duration of impact to the traveling public.  

The overall construction of the water main improvement project will be from April 2nd to June 1st.  If you have any questions or concerns please contact Jai Carter, Lakehaven Project Manager at

S 288th Road Diet – Phase 1 (Military to 34th Ave S) 

This project is mostly complete. Utility adjustments this week and next week will require temporary lane closures. Two-way traffic will be maintained.

S 348th (9th Ave S to Pacific Hwy) Pavement Preservation Project

This work is paused awaiting materials for the new pedestrian push buttons. Grinding and paving has been postponed until April 2024. For additional information,

Sound Transit – Federal Way Link Extension (FWLE)

23rd Ave S - S 320th  to S 317th : LONG TERM LANE CLOSURE 

Northbound traffic only on 23rd Ave S between S 320th to S 317th starting February 2024. Southbound traffic will be redirected to Pete Von Reichbauer Way.

S 317th - 23rd  Ave S to 28th Ave S

The two-way center turn lane will be removed starting March 4, 2023. Two-way traffic will be maintained.


Please see our Capital Improvement Projects (CIP) Dashboard for upcoming projects.