CITY COUNCIL AGENDA ITEM
ACTION REQUESTED:
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Approve the award of Change Order #4 to Contract 24-227, Eagle Street Gateway and Accessibility Improvements Project, to Baumgartner Construction, Inc., for an amount not to exceed $227,607.48 and a total award of $4,003,316.61
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DEPARTMENT: Transportation, Engineering and Development
SUBMITTED BY: Jennifer Louden, Director
BOARD/COMMISSION REVIEW:
N/A
BACKGROUND:
The City Council awarded Contract 24-227 to Baumgartner Construction, Inc. on December 3, 2024, with a completion date of September 19, 2025. The purpose of this contract was to improve accessibility to the lower Riverwalk by providing ADA-compliant ramps between the upper and lower paths just west of Eagle Street. Specifically, this work included replacement of the existing walls directly adjacent to the river, widening the riverway path to a minimum width of eight feet, constructing ADA-compliant stairways and ramps to provide access to the riverway, and landscaping improvements. This project is included in the Riverwalk 2031 Master Plan prepared by the Naperville Riverwalk Commission and endorsed by the City Council.
DISCUSSION:
This Change Order is requested to adjust the quantity of several bid items to reflect actual as-built quantities.
Baumgartner Construction, Inc. completed the scope of work prescribed by the plans and specifications that were prepared by the City’s third-party engineering consultant. However, during construction, it was determined that the quantities established in the bid documents for several pay items were not sufficient to complete the work as intended. Post-construction field surveys were completed to develop as-built drawings and perform calculations to verify the quantities eligible for payment. The impacted items include:
1. Backfill: the quantity in the contract quantities included the backfill associated with the structural elements but not the backfill required under the paver areas and throughout the rest of the site. The final quantity eligible for payment was verified by as-built drawings and confirmation of areas where backfill was required.
2. Structural concrete and associated reinforcement: when comparing these calculations with design calculations it was determined that some of the structural elements were unintentionally omitted from the original bid quantities. The final design requirements were verified, and the total quantity includes all required structural concrete and reinforcement.
3. Trucking: increasing the quantities for backfill and structural concrete above the bid quantities also increased the amount of existing material that needed to be removed from the site. As such, this Change Order also includes additional trucking costs directly related to the increase in the backfill and structural concrete quantities.
This contract was approved with contingency in the amount of 3% of the original contract value. The contingency remaining for this contract is not sufficient to account for the additional funds required. The table below provides a summary of the Change Order information for this contract.
Contract Award
|
Original Contract Value |
$3,516,001.27 |
|
Prior Cumulative Approved Change Orders |
$259,707.86* |
|
Subtotal |
$3,775,709.12 |
|
(+/-) This Change Order |
$227,607.48 |
|
Total Contract Value |
$4,003,316.61 |
*Three Change Orders were previously approved for this contract:
• Change Order #1 in the amount of $154,639.46. The majority of this Change Order was required to account for sheet piling adjacent to the Landform Sculpture. Sheet piling allowed for the safe construction of a retaining wall near the sculpture without impacting the sculpture’s foundation. Furthermore, the Change Order added salvage of additional pavers for use on future Riverwalk projects, three additional concrete piers, and replacement of the sidewalk ramp at the southwest corner of Eagle Street and Jackson Avenue.
• Change Order #2 to add 26 days to the contract (no cost increase). The time extension was required due to weather-related river conditions, redesign of structural components, and additional time to complete the sheet pile driving approved as part of Change Order #2.
• Change Order #3 in the amount of $105,068.40, using project contingency, and to add 13 days to the contract. The Change Order increased the quantity of several items to reflect as-built quantities. The time extension was required due to a modification in the structural design.
FISCAL IMPACT:
CIP #: PA053
Eagle Street Gateway upgrades are expensed to the Infrastructure account listed below. The expenses associated with this Change Order are being done in relation to PA053, Eagle Street Gateway and Accessibility Improvements. Since this project was largely completed in 2025, the 2026 budget did not include any funding for expenses related to PA053. However, staff does anticipate being able to support this Change Order within the 2026 budget. Capital Project Fund expenditures will be monitored and adjusted as needed to accommodate this Change Order.
|
Account Number |
Fund Description |
Total Budget Amount |
|
30292200-551502 |
Capital Projects Fund |
$3,060,000 |