The form liner depth varies between 3/4" to 2" maximum. On sheet 489 the detail for Form Liner Texture A, the 8-inch dimension should read 2". Panels shall be 5' tall maximum. If there is extra space at the top or bottom, panel type "0" should be used as is shown pictorially in the elevation view on Sheet No. 488. (11/01/2018)

As noted on Note 4 on Plan Sheet 487 and Note 4 on Plan Sheet 503, “The minimum factored bearing resistance for fill material at locations where the proposed theoretical leveling pad is above the existing ground line, shall equal or exceed 2,100 psf.” (11/01/2018)

The note on plan sheets 487 and 503 is intended to provide necessary bearing capacity information for fill in the event that field conditions vary based on ongoing construction work. The maximum applied bearing for locations where the leveling pad extends below the existing grade can be found in to the Structure Geotechnical Report available under the Additional Information folder on the IDOT website. (11/01/2018)

There are no proposed gates within the ornamental fence limits to be constructed within this contract. The Roadway Schedule on plan sheet 41 lists 48’ of ORNAMENTAL FENCE, WROUGHT IRON at the CTA Bus Turnaround and 40’ at the IDOT Pump Station. (11/01/2018)

The impact attenuator shown on plan sheet 91 is to be Pay Item 64300370 IMPACT ATTENUATORS (FULLY REDIRECTIVE, WIDE), TEST LEVEL 3 as called out on the plans and not a specific system. It is acceptable to select any unit from IDOT’s List of Approved Impact Attenuators that satisfies the design requirements. (11/01/2018)

The proposed chain link fence should comply with IDOT Standard Drawing 664001-02 and will not have barbed wire. (11/01/2018)

There will not be any Fully Redirective Temporary Attenuators that will remain—in-place when the project ends. The schedule item on plan sheet 41 is a Non-Redirective Attenuator per Plan Sheet 70 and the Summary of Quantities. (11/01/2018)

It is noted on Sheet 460, Note 7 that the Contractor shall expose all existing piles, drilled shafts and sheet piles to an elevation 1 foot below the top of these elements. Based on the existing plan information provided in the plans, the existing top of footing/piles are around elevation +/- 576.7 providing additional vertical clearance for drilling. It is also noted in the Suggested Stages of Construction Ramp EN Narrative, during Stage 1A to construct both the east abutment and proposed retaining wall no. 20. Proposed retaining wall no. 20 includes excavation to the MSE leveling pad elevation. Excavation to these elements provides additional clearance below the NW Flyover structure. The Department will consider alternative foundation designs and proposals in accordance with the Standard Specifications For Road and Bridge Construction, Adopted April 1, 2016, Article 104.07 - Value Engineering Proposals. (11/01/2018)

Wall 22A shall use Class I as indicated in Note 10 on Sheet 514, and as noted in the geotechnical memo in the Additional Information folder. (11/01/2018)

ALL pay items are electronically prorated by an internal letting system to reflect a reduced combination bid. The prorated combination bid total will be displayed on the "As Accepted Tabulation of Bids" report, which is posted on letting day. (10/30/2018)

The answer to Question #16 can be found in the Additional Information folder within the Plans and Special Provisions folder for Item 003. (10/29/2018)

The Department is in the process of issuing an addendum, please monitor the website for the addendum. (10/29/2018)

Mass concrete requirements apply to drilled shaft foundations as noted in the standard specifications. (10/29/2018)

Structural excavation will be paid for per the actual volumes to the leveling pad elevations, and to a vertical face 2' in front of the wall and to the back of the strap zone. Lightweight fill will be paid for within the strap zone and within the 2:1 excavated area beyond the strap zone where depicted on the drawings. (10/29/2018)

This question refers to Sheet 1086 which does not exist within Contract 60X79. (10/29/2018)

The locations of the pay item X0370078 BULKHEAD TUNNEL, CHICAGO are shown and called out on plan sheets 256 and 259. (10/29/2018)

Yes, the excavation beyond the strap zone is required to be sloped at a 2:1 maximum and will be paid for as earth excavation. The area beyond the strap zone above the 2:1 excavation line shall be backfilled with lightweight cellular concrete fill and will be paid for as lightweight cellular concrete fill. (10/29/2018)

Per Sheets 487 and 514, the over excavation beyond the straps shown is paid for as earth excavation (10/29/2018)

General Note 4 on Sheet 420 of the plans regarding metallizing of structural steel includes all cross frames and end diaphragms. Bearings shall be galvanized according to Note 9 on Sheet 454 and Note 8 on Sheet 456 of the plans. (10/29/2018)

Sheet 371 of 888 shows a HIGH MAST LIGHT TOWER FOUNDATION SCHEDULE. The schedule shows the station and offset for three 150-foot light towers to be installed in the contract. Each 150-foot tower requires a 60-inch concrete foundation. The 60-inch concrete foundations will be installed at the same locations (station and offset) as the three light towers. Note: The depth of each foundation is also shown in the schedule. (10/29/2018)

“ The Department will consider alternative foundation designs proposals in accordance with the Standard Specifications For Road and Bridge Construction, Adopted April 1, 2016 , Article 104.07 - Value Engineering Proposals.” (10/26/2018)

It should be available before the end of the week. Contractors should monitor the website for updates. (10/25/2018)

Both should be available before the end of the week. Contractors should monitor the website for updates. (10/23/2018)

DBE participation is based on the adjusted contract value. (10/22/2018)

On the primary project (Item 3, Contract 60X79), the "Combination Bid Total" field allows freeform entry of the combination bid total amount. (10/19/2018)

The "As Accepted Tabulation of Bids" report will be posted on the letting site and will display the apparent low bidder/bid amount as usual for each individual item. Once bid analysis occurs, the report may be modified if the apparent low bidder changes. In this event, an email will be sent through the subscription service to alert our industry partners of the change (10/19/2018)

Flagging will be paid by the Contractor but will be reimbursed per the Special Provision CTA FLAGGING AND COORDINATION SECTION 1.03C: The amount paid to the Contractor shall be the amount charged to the Contractor for all authorized CTA charges including CTA additive rates audited and accepted by the Department, according to Article 107.12 and Article 109.05 of the Standard Specifications. Per Article 107.12, "The Contractor shall pay cost of Railroad flaggers required for transporting material or equipment across the track. These costs shall be considered as included in the cost of the contract unit prices bid for various items of work involved. All other Railroad flagger costs will be incurred by the Department" Infrastructure shifts shall be considered as included in the cost of the contract also. (10/18/2018)