contact us

Access Engineering is interested in hearing from you.

Call our office at (314) 849 - 8445, and a human being will answer the phone. If you prefer to send us an email, please complete the form below and one of our team members will be in touch.

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office locations

Access Engineering is headquartered in South St. Louis County, at the intersection of Tesson Ferry Rd and Baptist Church Rd:

11820 Tesson Ferry Road
Suite 203
St. Louis, MO 63128

Access Engineering's second office location is on the second floor of the 4240 Duncan building in the Cortex Innovation District:

4240 Duncan Ave
Suite 200
St. Louis, MO 63110

Effective Monday, November 1, 2021 Access became part of TREKK Design Group. Like Access, TREKK is a woman-owned civil engineering firm with a nearly 20-year history. TREKK offers complementary services in civil, transportation, traffic, wastewater, water and stormwater engineering and construction inspection, as well as expertise in structural engineering, wastewater field services, and land and LiDAR survey. Access staff joins TREKK’s team of 150 employees across the Midwest.

We are excited about the future and hope that you will continue to look to our team at TREKK to solve your infrastructure challenges.

office locations

To learn more visit us at TREKKLLC.COM

Sincerely,

Marie Dennis, PE, PTOE
Access Engineering, Founder & Principal

office locations

To learn more visit us at TREKKLLC.COM

Sincerely,Marie Dennis, PE, PTOEAccess Engineering, Founder & Principal

Sincerely,

Marie Dennis, PE, PTOE
Access Engineering, Founder & Principal