Precast Culverts Flood Mitigation & Pedestrian Safety Solution – Allen Creek Railroad Berm Project

April 22, 2021 1:00 pm

Jeremy Hedden, P.E., Project Manager, Bergmann Associates; Jim Washabaugh, Bridge Product Manager, Northern Concrete Pipe, Inc.; and Q&A panel member Josh Beakley, P.E., Vice President of Engineering, American Concrete Pipe Association

Earn 1-hour Certificate of Attendance

Click to Register

Announcements: This portion of the webinar will provide you with the latest happenings related to ABC in the US and abroad to keep you informed. (10 minutes)

Featured Presentation: Precast Culverts Flood Mitigation & Pedestrian Safety Solution – Allen Creek Railroad Berm Project (35 Minutes)

Description: “The biggest flood mitigation project in city history” is the description given to this project by the City of Ann Arbor, Michigan. Enclosed in 1926, Allen Creek near Argo Dam in Ann Arbor was seeing frequent stormwater events exceeding its capacity. In addition, overland flows were impeded by the railroad berm which parallels the Huron River, exacerbating the local flooding problem. The same railroad berm also served as a barrier for citizens looking to use the trail system that parallels the river. In 2020 this ABC project addressed both of these issues, using precast concrete culverts to open the berm. Precast culverts were installed under the railroad tracks during the 37-hour outage to address the flooding problem and to enhance pedestrian safety. Combinations of parallel and single runs of varying size and length of precast box sections totaled 680 linear feet for the entire project. This presentation includes design and construction details as well as lessons learned.

Presentation Photos/Graphics:

1) Multiple crews for excavation during track outage

2) Boxes installed during track outage with temporarily exposed fiber optics

3) Working through the night

4) Buried bridge combination of dual storm sewer boxes and pedestrian tunnel

5) Installation of boxes completed; time to backfill

6) Aerial view looking south near the end of the track outage, backfilling prior to reconnecting the tracks

7) Drone view of completed project

Question & Answer Period: Submit your questions when you register for the webinar and also in the question box during the webinar. (15 minutes)

Certificate of Attendance: Each site registered for this webinar will receive an email for your response. Just click the first link in the email to obtain a certificate. For multiple participants at a site, the point-of-contact registrant for that site also clicks the second link in the email, logs in, and clicks “Attendees” to provide first name, last name, and email address for each participant at that site; each participant will then receive an automatic email with link to print an individual certificate. Accessing the second link in the email will also allow participants to print certificates for past webinars that were attended by simply clicking the webinar title. Please let Dr. David Garber at FIU know if you have questions or need assistance with receiving your certificate. David’s email address is

For More Information: Please visit our website ( for more information. You can also contact us by sending an email to