Hotel Information

The official hotel for the ACI Concrete Convention is the Philadelphia Marriott Downtown. All convention events will take place at the Philadelphia Marriott Downtown. Reserve Now!

ACI Hotel Blocks

Hotels Rate
Philadelphia Marriott Downtown
(ROH Single/Double)

+ tax

Hotel Block Information - Philadelphia Marriott Downtown

Reserve your hotel room online at the Philadelphia Marriott Downtown. Reservations can also be made over the phone by calling +1.215.625.2900 and referencing the group name: American Concrete Institute.

The ACI group rates are available until October 12, 2024, subject to room availability. The $255 rate is based on a standard single or double occupancy run of house room. The room rate may increase if you select an upgraded room option. All reservations must be guaranteed with a major credit card. You may cancel your reservation up to 72 hours prior to check-in without penalty. After 72 hours, one night's room and tax will be charged.

During your stay, you may be contacted at:

The Philadelphia Marriott Downtown, 1201 Market Street, Philadelphia, PA 19107
Phone: +1.215.625.2900

Check in: 4:00 pm EDT | Check out: 11:00 am EDT

Cancellation Policy

You may cancel your reservation at the Philadelphia Marriott Downtown, up to 72 hours prior to arrival without penalty. After 72 hours, one night's room and tax will be charged.

Hotel Piracy

Please note: Should you receive a phone call or email requesting you make your hotel reservation or upgrade your reservation through an outside party (or a party saying they represent the hotel) for a different rate, please do not comply and contact ACI Event Services at +1.248.848.3795 to report this. 

Accessible Rooms

To reserve an accessible hotel room, please call each hotel directly and reference the American Concrete Institute.

Government Rooms

ACI has a small block of government-rate rooms at The Philadelphia Marriott Downtown. Government-rate rooms can be booked here. If you have any questions regarding ACI's government room block, please contact Carole Berrelez at or +1.248.848.3186 for further assistance.

Convention News

2024 Fall Convention Registration opening soon.

Sponsor Prospectus
Download the 2024 Fall Sponsor Prospectus. [PDF]

Need Employer Support?
Download your customizable letter and prove to your employer the benefits of attending the ACI Convention.
[Customizable letter]



Place your company at the forefront of the convention, gaining exposure to over 1500 industry professionals when you sponsor or exhibit at an ACI Convention.

Learn More Now »

Stay Connected

 X, formerly twitter




Upper Level Sponsors

Concrete Sealants
Controls Inc.
Master Builders