FRUPA Loyalty in P3 Joint Ventures: “Adverse Interest” Requires Objective Divergence, and Technical Capital-Call Defects Yield to Substantial Performance

Court: United States Court of Appeals for the Eleventh Circuit
Case: The Lane Construction Corporation v. Skanska USA Civil Southeast, Inc.
Date: April 15, 2026

1. Introduction

This appeal arises from a high-stakes infrastructure “P3” (public-private partnership) project: Florida’s $2.3 billion “I-4 Ultimate Project.” Three contractors—Skanska USA Civil Southeast, Inc. (“Skanska”), Granite Construction Company (“Granite”), and The Lane Construction Corporation (“Lane”)—formed a Florida unincorporated joint venture (“SGL”) to perform the construction work under a Design Build Agreement (“DBA”) with the concessionaire, I-4 Mobility Partners OpCo LLC (“I4MP”).

When the project turned massively unprofitable, Lane urged SGL to pursue a “Termination Request” strategy designed to pressure I4MP to invoke termination rights under a separate concession agreement with FDOT (to which SGL was not a party). Skanska opposed that strategy as legally tenuous and commercially catastrophic. Lane then (i) sued Skanska for breach of fiduciary duty (asserting Skanska’s “dual stake” created a conflict because Skanska’s corporate affiliates also owned half of I4MP), and (ii) refused to fund capital calls required by the Joint Venture Agreement (“JVA”).

The District Court (after summary judgment on the contract claims and a ten-day bench trial on fiduciary duty) ruled for Skanska and Granite, ordering Lane to reimburse roughly $80 million in unpaid capital contributions plus prejudgment interest. The Eleventh Circuit affirmed, and in doing so clarified important points about (a) capital-call enforcement under Florida contract principles, and (b) the meaning of “adverse interest” under Florida’s Revised Uniform Partnership Act (“FRUPA”) in a conflict-of-interest theory.

Key issues

  • Contract/capital calls: Did Lane materially breach the JVA by refusing capital calls that Lane claimed were unauthorized or procedurally defective?
  • Indemnity and interest: Were Skanska and Granite entitled to indemnity and prejudgment interest for Lane’s default?
  • Fiduciary duty (loyalty): Under FRUPA, did Skanska breach the duty of loyalty by rejecting or failing to pursue the “Termination Request” allegedly to protect I4MP/Skanska AB?
  • Open doctrinal question: Does FRUPA § 620.8404(2)(b) contain (or permit) a “fairness defense” similar to corporate/LLC conflict statutes?

2. Summary of the Opinion

The Eleventh Circuit affirmed across the board. On the contract claims, it held Lane’s refusal to pay capital calls was a material breach. Even if Skanska’s unilateral-call notice paperwork was technically imperfect, Florida’s substantial performance doctrine prevented Lane from using minor procedural issues as a pretext to withhold undisputedly necessary funding. After Lane’s default, the JVA stripped Lane of Executive Committee voting rights; subsequent calls approved by Skanska and Granite were “unanimous” under the JVA’s governance structure.

The Court also affirmed contractual indemnity and prejudgment interest at Florida’s statutory rate, rejecting Lane’s argument that a contractual “demand loan” mechanism was the exclusive route to interest.

On fiduciary duty, the Court affirmed the judgment for Skanska but refined the analytical path. It held the JVA did not effectively displace FRUPA’s duty of loyalty and then concluded Lane failed to show Skanska acted “as or on behalf of” a party with an “interest adverse” to the partnership within the meaning of FRUPA § 620.8404(2)(b). The Court additionally discussed (without deciding) whether Florida courts might recognize a “fairness defense” under FRUPA—an issue it flagged as unanswered for the Florida Supreme Court.

Judge Newsom concurred in the result but criticized parts of the majority’s fiduciary-duty discussion as unnecessary alternative analysis, citing United States v. Files.

3. Analysis

3.1 Precedents Cited

A. Standards of review and appellate method

  • Terrell v. Sec'y, Dep't of Veterans Affs. and Jenkins v. Nell: The Court reiterated de novo review for summary judgment and the obligation to view evidence and inferences in the nonmovant’s favor.
  • Nelson v. Tompkins: Reinforced that summary judgment cannot rest on resolving genuine disputes of material fact against the nonmovant.
  • CFTC v. S. Tr. Metals, Inc. and Fed. R. Civ. P. 52(a)(6): Post-bench-trial factfinding is reviewed for clear error, with deference to credibility assessments.
  • United States v. Brown (quoting United States v. U.S. Gypsum Co.): Provided the classic “definite and firm conviction” formulation for clear error.
  • Holton v. City of Thomasville Sch. Dist. (quoting NAACP, Jacksonville Branch v. Duval Cnty. Sch.): Recognized that application of an incorrect legal standard can “taint” factual findings.
  • United States v. Files (Newsom, J., concurring): Used to caution against unnecessary alternative holdings—framing the concurrence’s narrower approach.

B. Contract law: breach, conditions, repudiation, performance

  • Friedman v. New York Life Ins. Co.: Supplied the elements of a Florida breach of contract claim (valid contract, material breach, damages).
  • Threshold L & H Const. Co. v. Circle Redmont, Inc.: Supported the proposition that assent can be manifested by words or conduct—relevant to whether Lane’s Executive Committee representative assented to the January 2021 call.
  • Racing Props., L.P. v. Baldwin: Used for the principle that substantial performance of conditions precedent is generally required for recovery—forming the backdrop for Lane’s “authorization as condition precedent” argument.
  • Green Tree Servicing, LLC v. Milam (quoting Casa Linda Tile & Marble Installers Inc., v. Highlands Place 1981 Ltd.): Provided the Florida definition of “substantial performance,” which the Court used to excuse Skanska’s technical noncompliance with unilateral-call notice formalities.
  • Mori v. Matsushita Elec. Corp. of Am.: Cited for anticipatory repudiation (“prospective breach”) where a party absolutely repudiates performance before it is due—applied to Lane’s letter stating it would not pay any future capital contributions.
  • BMW of N. Am., Inc. v. Krathen: A straightforward rule of Florida contract interpretation: unambiguous contractual language must be enforced as written—supporting indemnity analysis under the JVA.

C. Remedies: prejudgment interest and damages certainty

  • Argonaut Ins. Co. v. May Plumbing Co.: Core Florida authority that prejudgment interest is awarded as a matter of law on liquidated out-of-pocket losses from the date of loss, to make the plaintiff whole.
  • DSLRPros, Inc. v. Lalo: Confirmed parties can contract around prejudgment interest or set an alternate rate, but only if the contract actually does so.
  • Himes v. Brown & Co. Sec. Corp.: Reinforced Florida’s requirement that damages be proven with reasonable certainty, not speculation—applied to Lane’s counterfactual termination theory.

D. Fiduciary duty framing, statutory interpretation, and comparative entity law

  • Meinhard v. Salmon: The opinion invoked Cardozo’s “punctilio of an honor the most sensitive” as a historical reference point, contrasting it with FRUPA’s contractual flexibility under § 620.8103.
  • McCoy v. Durden: Used to illustrate how agreements can carefully carve out conflict categories (there in an LLC operating agreement context) and the sort of drafting that SGL’s JVA lacked.
  • In re Walt Disney Co. Derivative Litig.: Cited for the observation that “bad faith” can be conceptually hazy, undercutting Skanska’s attempt to treat JVA “bad faith” language as a replacement for loyalty.
  • B & L Cellular v. USCOC of Greater Iowa, LLC: Offered as a comparative example where a court applied a fairness inquiry to loyalty-like statutory language, informing the Court’s discussion of whether Florida might adopt a similar approach.
  • West v. American Telephone & Telegraph Co.: The Court cited the Erie doctrine’s requirement that federal courts apply state law as declared by the state’s highest court (and, when unclear, predict or certify), while ultimately avoiding the issue.
  • Conage v. United States and Steele v. Comm'r of Soc. Sec.: Cited for statutory interpretation principles—undefined terms take their ordinary meaning, with dictionaries as a starting point—applied to “adverse” in FRUPA.
  • Am. Sales & Mgmt. Org. LLC v. Lopez: Cited in the discussion of Florida common law’s tendency to treat damages as an essential element of fiduciary duty claims, relevant to the “fairness defense/damages” debate.
  • Env't Def. Fund, Inc. v. Alexander: Invoked in an equity footnote about laches-like delay barring equitable relief, noting Lane waited years after perceiving a conflict before suing.

3.2 Legal Reasoning

A. Capital calls: the Court’s anti-“gotcha” enforcement of funding obligations

The Court’s contract analysis is anchored in a practical premise: a joint venture’s capital-call regime is existential, and a member cannot exploit minor procedural imperfections to justify deliberate nonfunding—especially where the venture’s need for cash is undisputed.

  1. January 2021 capital call: The Court suggested Lane’s “looks ok to me” email likely constituted assent (Threshold L & H Const. Co. v. Circle Redmont, Inc.), but it also acknowledged summary judgment must be viewed in Lane’s favor (Nelson v. Tompkins). The decisive move was to uphold the call under Skanska’s unilateral authority (JVA § 4.3(b)), excusing Skanska’s technical notice deficiency under substantial performance (Green Tree Servicing, LLC v. Milam; Casa Linda Tile & Marble Installers Inc., v. Highlands Place 1981 Ltd.). The reasoning turned on immateriality: Lane’s objection rights were narrow, Lane could have objected anyway, and Lane admitted it intended not to pay regardless.
  2. Subsequent calls: Lane’s letter and conduct amounted to anticipatory repudiation (Mori v. Matsushita Elec. Corp. of Am.) and an actual default. The JVA’s default provision then stripped Lane of governance rights; as a result, later calls approved by Skanska and Granite were “unanimous” because Lane had no vote.

The doctrinal throughline is that Florida contract law will not reward strategic nonperformance when the counterparty has substantially delivered the functional substance of the contractual procedure and the complaining party cannot show meaningful prejudice.

B. Indemnity: enforcing proportionate-risk bargains in multi-member ventures

The indemnity holding is straightforward textualism: once Lane breached by refusing its proportionate funding, JVA §§ 3.2 and 8.4 plainly required reimbursement and indemnity for losses and expenses incurred “as a result” of that breach. The Court relied on BMW of N. Am., Inc. v. Krathen to underscore that unambiguous indemnity clauses are enforced as written.

C. Prejudgment interest: statutory “make-whole” default absent clear contractual displacement

Lane argued the JVA’s “demand loan” mechanism was the exclusive route to prejudgment interest. The Court rejected this, leaning on Argonaut Ins. Co. v. May Plumbing Co. for the default rule: once damages are liquidated and represent out-of-pocket losses, prejudgment interest follows as a matter of law to prevent the breaching party from profiting from delay. Under DSLRPros, Inc. v. Lalo, parties can contract around that rule—but the Court found nothing in the JVA that clearly did so.

D. FRUPA duty of loyalty: (1) limited contractual modification; (2) “adverse interest” as a threshold requirement

The fiduciary-duty portion does three significant things:

  1. It rejects the idea that generic “good faith”/exculpation language rewrites FRUPA loyalty. The Court treated FRUPA § 620.8103 as allowing only specific, not vague, modification of loyalty: partners may not eliminate loyalty, but may identify “specific types or categories of activities” that do not violate it (if not manifestly unreasonable) or authorize conduct after full disclosure. The Court found SGL’s JVA lacked the kind of targeted conflict carveouts that would be expected in a P3 structure with known overlapping ownership.
  2. It flags—but does not decide—whether Florida recognizes a “fairness defense” under FRUPA. The Court contrasted FRUPA with conflict statutes in Florida corporate and LLC law that expressly allow conflicted transactions if “fair,” and noted that HRUPA (not adopted in Florida) would add an explicit fairness defense. The panel suggested the question remains open for the Florida Supreme Court, but avoided certification because the case could be resolved earlier.
  3. It tightens the conflict inquiry by emphasizing “adverse interest” and “as or on behalf” language. Rather than treating common ownership alone as disqualifying, the Court read FRUPA § 620.8404(2)(b) to require (i) action “as or on behalf of” another party, and (ii) that other party must have an interest “adverse” to the partnership in the relevant decision context. On this record, the Court found Lane failed to prove Skanska acted on behalf of I4MP/Skanska ID, and—critically—failed to show adversity regarding the termination strategy because rejecting the Termination Request was objectively in SGL’s best interest.

E. Damages and counterfactuals: termination as speculation

Even aside from the loyalty elements, the Court reinforced the practical proof problem with Lane’s theory. To attribute losses to Skanska’s rejection of termination, Lane had to establish a reliable chain of hypothetical events: I4MP’s acceptance, FDOT’s reaction, litigation outcomes, Step-in Rights, reputational effects, and future business consequences. The Court treated that chain as conjectural and inconsistent with Florida’s reasonable certainty requirement for damages (Himes v. Brown & Co. Sec. Corp.).

F. The concurrence: judicial minimalism and the limits of “necessary to decide”

Judge Newsom’s special concurrence agreed with the contract holdings and the judgment but disapproved of the majority’s extended discussion of FRUPA modification and the fairness-defense question as unnecessary. Quoting United States v. Files, the concurrence urged fewer alternative holdings, reflecting an internal tension between (i) resolving the case and (ii) using the case as an occasion to map unsettled state-law terrain.

3.3 Impact

A. P3 and joint-venture governance: careful drafting is no longer optional

The opinion is a cautionary tale for P3 structures with overlapping ownership between concessionaire and contractor participants. The Court emphasized that FRUPA allows tailored conflict management under § 620.8103, but SGL’s JVA did not contain the needed specificity. Future P3 joint ventures organized under Florida partnership law should expect pressure to:

  • identify known conflict categories in the agreement (e.g., affiliate relationships with concessionaires/lenders);
  • create disclosure, approval, or independent-review procedures for conflict-prone decisions (claims, settlement posture, termination threats); and
  • decide ex ante whether and how counsel’s advice or committee approvals will “cleanse” conflict allegations.

B. Capital-call disputes: “procedural defect” defenses face a steep climb

For venture participants, the contract portion reinforces that capital calls are enforceable in substance, not merely form. Where the venture’s need for cash is undisputed and the nonpaying member is strategically repudiating, courts may invoke substantial performance to defeat technical objections—particularly when the contract itself requires payment during disputes.

C. FRUPA loyalty claims: adversity and agency-like alignment are central

The Court’s reading of FRUPA § 620.8404(2)(b) underscores that “conflict” allegations must be tethered to the statutory text: proof that the fiduciary acted “as or on behalf of” another, and proof that the other’s interest was “adverse” in the disputed decision. Common ownership and generalized suspicions may be insufficient without evidence of decision-level divergence and alignment.

D. Unresolved Florida question: fairness defense under partnership loyalty

The panel’s discussion tees up a significant state-law question: whether Florida courts will import a fairness defense into FRUPA loyalty claims (as HRUPA does expressly). If Florida ultimately recognizes such a defense, plaintiffs may need to show not only “conflict,” but also unfairness or harm. If Florida rejects it, technical conflict alone could support equitable relief even absent provable damages—though the opinion suggests practical obstacles (including delay and causation) remain formidable.

4. Complex Concepts Simplified

P3 Model (Public-Private Partnership)
A structure where a private concessionaire finances and is contractually responsible to the government, while contractors perform the construction under separate contracts. Here, I4MP contracted with FDOT; SGL contracted with I4MP.
Equivalent Claim Notice / Relief Event
A contractual mechanism through which SGL asked I4MP to pursue compensation or schedule relief from FDOT when certain events (e.g., sinkholes, hurricanes) caused delay/cost overruns.
Step-in Rights
A right allowing FDOT, after termination of the concession agreement, to “step into” the concessionaire’s position and keep the construction contract running—meaning the contractor may be forced to continue working rather than escape.
Scrivener’s error
A drafting typo. Lane relied on the DBA’s mistaken “assignment” language to argue I4MP would assume SGL’s construction obligations. Evidence showed it was a typo that, when corrected, supported the opposite (FDOT stepping in to keep SGL on the hook).
Substantial performance
A doctrine preventing a party from avoiding its own obligations based on minor imperfections in the other party’s performance, when the essential benefits of the bargain were delivered and the defect caused no meaningful prejudice.
Anticipatory repudiation
A party’s clear statement before performance is due that it will not perform. Lane’s letter saying it would not make further capital contributions qualified as repudiation under Florida law.
Prejudgment interest
Interest awarded from the date money was wrongfully withheld to the date of judgment, designed to make the injured party whole—treated in Florida as a matter of law for liquidated pecuniary losses.
FRUPA duty of loyalty (and “adverse interest”)
Under FRUPA, a partner must not deal with the partnership as or on behalf of someone with interests hostile to the partnership. This case emphasizes that identifying an affiliate relationship is not enough; the claimant must show action on behalf of an adverse-interest party in the disputed decision context.

5. Conclusion

The Eleventh Circuit’s decision does two principal things of lasting importance. First, it strengthens the enforceability of capital-call regimes in Florida joint ventures by rejecting technical, no-prejudice procedural challenges—especially where a member’s nonpayment is strategic and the venture’s need for funding is undisputed. Second, it clarifies that FRUPA loyalty claims premised on conflicts require careful attention to the statute’s language: the fiduciary must act “as or on behalf of” a party with an “interest adverse” to the partnership, and adversity is an objective, decision-specific concept—not a label supplied by suspicion or corporate family trees alone.

At the same time, the opinion signals an open state-law question: whether Florida recognizes a “fairness defense” under FRUPA akin to modern corporate/LLC conflict statutes or HRUPA’s express provision. Until the Florida Supreme Court speaks, Florida partnership agreements—particularly in P3 settings—should proactively and specifically address known affiliate overlaps and conflict-handling procedures under FRUPA § 620.8103, rather than relying on generic “good faith” or exculpation language after the fact.