Spec 2340 – The Improvement of East 14th Street from 162nd Avenue to 172nd Avenue

The project involves a comprehensive streetscape reconstruction of a 4,000‑ft corridor on East 14th Street (162nd Ave – 172nd Ave) in the Ashland community of Alameda County, CA. Work includes full removal and replacement of existing pavement, installation of new unit and keystone pavers, median reconstruction, storm‑drain upgrades, utility relocations (EBMUD, PG&E, OLSD), tree protection and root pruning under a certified arborist, refurbishment and relocation of bus shelters by Clear Channel Outdoor, removal and re‑installation of fencing and sliding gates, and installation of pedestrian barriers. The contract specifies detailed bid‑item numbers, quantities, and technical clarifications (e.g., structural soil under pavers, recycled aggregate base, CLSM backfill) and will be administered by Alameda County with coordination from Caltrans and multiple utility agencies. • Primary construction elements: pavement & unit pavers, median pavers, curbs, storm‑drain systems, utility relocations, bus shelter refurbishment, fence/sliding‑gate removal‑reinstall, pedestrian barriers. • Technical requirements: use of structural soil for keystone pavers, 100 % recycled aggregate base allowed, CLSM backfill treated as incidental, no waterproofing or bituminous setting beds, and detailed quantity adjustments to be reflected in upcoming addenda. • Coordination responsibilities: contractor must provide a four‑week utility access window per construction stage, obtain permits, submit permit‑fee reimbursements, and adhere to a health‑and‑safety plan (including certified arborist supervision and bird‑survey coordination). • Contract administration: Alameda County (owner/engineer) oversees specifications, while Caltrans provides standard specs; multiple utility agencies (EBMUD, PG&E, OLSD) are involved in utility work, and Clear Channel Outdoor supplies the bus shelters.