CHANGE ORDER NOTICE I-20-4526 Tri-State Tollway, DSGN REQ On-call and as-needed Phase II Eng. Svs.

This solicitation is a change‑order notice extending an existing design‑services contract for the Tri‑State Tollway (I‑20‑4526). The amendment adds a one‑year on‑call and as‑needed Phase II engineering services period, with no additional funds required. Work will focus on drainage improvements in Katherine Legge Park and requires coordination with local municipalities, involving two submittal cycles each estimated at 3‑4 months plus a final plan month (≈10 months total). The amendment ensures continuity of expertise and avoids loss of knowledge if the current contract expires on 12/31/2026. • Extends an existing $3 M professional‑services contract (no extra budget). • Provides on‑call engineering services for a one‑year period, primarily civil‑engineering design. • Requires coordination with local agencies and multiple review cycles, totaling roughly ten months of effort.