The Tenth Circuit Court of Appeals recently upheld a lower court's ruling in the case of AECOM Technical Services, Inc. v. Flatiron | AECOM, LLC, affirming a jury's verdict that favored the engineering subcontractor, AECOM Technical Services (ATS). This decision, filed on August 14, 2026, affects the construction industry, particularly in how contractual disputes are handled between joint ventures and subcontractors.
The case arose from a joint venture formed by Flatiron Constructors, Inc. and AECOM Energy & Construction, Inc. to secure a contract for constructing express lanes on a 12.5-mile stretch of the C-470 freeway in Colorado. After winning the bid with designs created by ATS, tensions escalated between the joint venture and ATS, leading to a series of lawsuits over alleged breaches of contract and mismanagement. The dispute highlights the complexities of contractual relationships in large infrastructure projects.
In 2019, ATS filed a lawsuit against the joint venture, claiming breach of contract and seeking over $5 million in damages for unpaid change orders. The joint venture countered with claims exceeding $260 million, alleging breaches of both the subcontract and the teaming agreement. After a lengthy trial, a jury ruled in favor of ATS, prompting the joint venture to appeal the decision, citing procedural errors and claims for a new trial.
The Tenth Circuit, led by Judge Phillips, reviewed the joint venture's arguments and found them unpersuasive. The court stated, "All lack merit" and affirmed the district court’s judgment for ATS. The court emphasized that the joint venture's claims of procedural errors during the trial did not warrant a new trial, reinforcing the importance of following proper legal procedures in contract disputes.
The ruling confirmed that the joint venture had waived certain rights by submitting change orders without the required approvals from the Design Change Control Board. The court noted that the joint venture had effectively shelved several of ATS’s potential change orders, leading to the jury's decision. The court concluded that the jury's findings were supported by sufficient evidence and that the lower court acted within its discretion.
This ruling has significant implications for future construction contracts and disputes. It reinforces the necessity for parties to adhere strictly to contractual obligations and procedures, especially in complex joint ventures. The decision also clarifies the limits of liability in contracts, particularly regarding subcontractors and their rights to compensation for work performed.
Moving forward, this ruling may influence how construction firms draft their contracts and manage their relationships with subcontractors. It serves as a reminder that failure to comply with contract terms can lead to substantial financial repercussions. The case also illustrates the importance of clear communication and documentation in joint ventures, as misunderstandings can lead to costly legal battles.
As of now, the joint venture has not indicated whether it plans to appeal the Tenth Circuit's decision to the Supreme Court. However, the outcome of this case may have lasting effects on similar disputes in the construction industry.