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Water & Wastewater Market Projects
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BLACK RIVER  SEWER STORAGE TUNNEL
Geotechnical Investigations & Rock Tunnel Design
​NTH utilized tunnel & underground engineering experience to help the City of Lorain choose an optimal alignment to minimize risk and maximize future high value land development opportunities.

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Oakland-Macomb Interceptor Drain Repair 
Averting Future Sinkholes

NTH was retained to investigate and provide engineering services for a sinkhole in the City of Sterling Heights with a diameter of 11 feet.

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Oakland-Macomb Interceptor
Drain Repair Program 

NTH is leading the construction administration team including on-site resident engineering, as-needed construction engineering, submittal reviews, contractor substitutions, pay applications, and community outreach programs.

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Rummell Drain
Emergency Stabilization Of Undermined Foundations Averts Roadway Collapse

NTH conducted an investigation into the cause of a sinkhole that developed in Southfield, Michigan. NTH’s analysis lead to a repair effort to stabilize the undermined foundations of the culvert.



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Allen Park Tunnel
Upstream Storage And Conveyance Tunnel

​NTH provided geotechnical engineering and instrumentation investigation, design services, construction material testing and geotechnical instrumentation monitoring services fo​r a proposed 96-inch inside diameter upstream storage and conveyance tunnel with pump station.


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Detroit  Water & Sewerage Department
Water Main Replacement Project
NTH designed 35,000 feet of replacement distribution main varying in size from 8-inches to 12-inches in diameter through various residential and main thoroughfares within the City limits