Historic Bridge Foundation v. Buttigieg, 22 F.4th 275

Background

The Frank J. Wood Bridge (1932) is a riveted steel through-truss carrying ~19,000 vehicles/day and lies within a historic industrial district in Maine; inspections showed it is fracture‑critical and structurally deficient, prompting weight limits.
MDOT proposed a project (2015–2019) with three viable alternatives: two 75‑year rehabilitation options (one with extra sidewalk) and a 100‑year new steel girder replacement upstream with sidewalks/shoulders.
MDOT estimated construction and future maintenance costs, computed both non‑discounted "service‑life" totals and discounted life‑cycle (present value) figures; non‑discounted totals favored replacement ($17.3M replacement vs. $35.2M rehabilitation over expected lives).
FHWA adopted MDOT's analysis, relied primarily on non‑discounted service‑life costs, concluded rehabilitation would impose costs of "extraordinary magnitude" under Section 4(f) and approved replacement; it also issued a Finding of No Significant Impact under NEPA.
Friends of the Frank J. Wood Bridge sued, challenging line‑item cost estimates and FHWA’s refusal to make discounted life‑cycle costs the primary basis; the district court upheld FHWA.
On appeal, this Court affirmed most holdings but vacated in part and remanded for FHWA to further justify use of the service‑life method and/or explain whether the ~53% discounted cost differential is an "extraordinary magnitude" under 23 C.F.R. § 774.17.

Issues

Issue	Plaintiff's Argument	Defendant's Argument	Held
1) Were line‑item cost estimates arbitrary/capricious?	Many challenged items (temporary bridge, trestle premium, steel erection rate, repainting, future substructure work) are unsupported and inflated.	FHWA reasonably relied on MDOT/consultant estimates; explanations in record suffice.	Court affirmed: estimates not clearly erroneous or arbitrary; three specific items discussed were supported or forfeited.
2) Was FHWA arbitrary for declining to use discounted life‑cycle cost analysis as primary basis?	FHWA ignored its own and OMB/FHWA guidance favoring discounting; failing to discount is unreasonable and required further explanation.	No regulation literally requires discounting; FHWA used service‑life analysis as more "accurate" for agency spending realities; discounted figures were also calculated.	Court held failure to justify departure from discounting required further explanation; remanded for FHWA to justify service‑life method and/or evaluate whether ~53% PV differential is "extraordinary."
3) Was inclusion of a $4M temporary bridge in rehabilitation costs improper absent finding of severe detour impacts under 23 C.F.R. § 774.17?	Temporary bridge inclusion is unjustified; agency should have treated detour impact as a separate alternative showing "severe" impacts.	Temporary bridge is a reasonable mitigation for traffic during construction and need not be a separate Section 4(f) alternative; guidance contemplates traffic‑maintenance methods.	Court upheld FHWA: mitigation (temporary bridge) appropriately considered as project design choice and eliminated need to find "severe" impacts.
4) Was $1M trestle "premium" for replacement clearly understated given consultant range $1.5M–$6.5M?	FHWA underestimated trestle cost, skewing replacement cost low.	Major bid items typically include trestles; an additional $1M premium was reasonable given site difficulty; most trestle cost already captured.	Court upheld FHWA: record explanation adequate and estimate not arbitrary.

Key Cases Cited

DOT v. Pub. Citizen, 541 U.S. 752 (2004) (NEPA imposes procedural duties, not specific outcomes)
Citizens to Preserve Overton Park v. Volpe, 401 U.S. 402 (1971) (agency action entitled to regularity presumption but subject to thorough review)
SEC v. Chenery Corp., 332 U.S. 194 (1947) (reviewing courts must judge agency only on the grounds invoked by the agency)
FCC v. Fox Television Stations, 556 U.S. 502 (2009) (agency must acknowledge and reasonably explain changes in policy)
Dist. 4 Lodge of the Int'l Ass'n of Machinists v. Raimondo, 18 F.4th 38 (2021) (agency explanation and peer review support rationality of estimates)
Neighborhood Ass'n of the Back Bay, Inc. v. Fed. Transit Auth., 463 F.3d 50 (1st Cir. 2006) (section 4(f) imposes substantive constraints)
Conservation Law Found. v. FHWA, 24 F.3d 1465 (1st Cir. 1994) (deferential review for NEPA/4(f) decisions)
Save Our Heritage v. FAA, 269 F.3d 49 (1st Cir. 2001) (section 4(f) is more stringent where applicable)
Airport Impact Relief, Inc. v. Wykle, 192 F.3d 197 (1st Cir. 1999) (courts must ensure agency made reasoned evaluation under NEPA)
Penobscot Air Servs., Ltd. v. FAA, 164 F.3d 713 (1st Cir. 1999) (articulated standards for reviewing agency fact‑finding under APA)