The work to be performed under these specifications consists of furnishing all
labor, tools, materials, and equipment necessary for construction of the 61st Place West Culvert
Replacement located in the western portion of the City of Mukilteo. In general, t his C ontract provides
for the improvement of an existing, deficient stream crossing with a new box culvert, improving both
stream function and adjacent roadway conditions. The existing 54 foot long, 24 inch diameter metal
culvert will be removed and replaced with a new 40 foot long, 8.0 foot wide by 6.8 foot tall concrete box
culvert. The project will also recreate approximately 320 linear feet of stream channel, construct
retai ning walls, relocate existing utilities, and reconstruct the existing roadway. Work involves removal
of certain existing site features; clearing and grubbing; roadway and channel excavation; dewatering;
structure excavation , installation , and backfill of a box culvert foundation and structure; constructing
stacked, stone filled retaining walls; grading with gravel borrow, streambed materials, and crushed
surfacing; installing a storm drainage collection and conveyance system for roadway runoff and
gr oundwater; installing concrete gutters; paving with hot mix asphalt; installing guardrail; installing
plantings to mitigate disturbances created during construction within stream recreation areas;
permanent signing; construction surveying; traffic control; erosion control best management practices;
restoring off roadway vegetated areas and other work, all in accordance with the attached Contract
Plans, these Contract Provisions, and the Standard Specifications