Granite-Super JV wins $324.8 million Big Creek Tunnel contract in Cleveland
The joint venture of Granite and Super Excavators was awarded a contract valued at about $324.8 million by the Northeast Ohio Regional Sewer District for the Big Creek Tunnel in Cleveland, Ohio.
Event / data period: 2026-10-01
Published: · Updated:
Granite announced on 1 October 2026 that the Granite-Super Joint Venture, formed by Granite and Super Excavators, has been awarded a contract by the Northeast Ohio Regional Sewer District (NEORSD) for the Big Creek Tunnel project in Cleveland, Ohio. Granite put the contract value at approximately $324.8 million. Granite said construction is scheduled to begin in fall 2026 and is expected to be completed in winter 2030.
The tunnel is part of NEORSD’s Project Clean Lake, a $3 billion, 24-year program begun in 2011 to improve water quality in the region, and is the last of seven large-diameter combined sewer overflow storage tunnels built under it. Granite’s scope includes 22,300 linear feet of 20-foot-diameter tunnel and 3,115 linear feet of ancillary tunnels, such as adits, an overflow tunnel, a connecting tunnel and a dewatering tunnel.
The work also covers major structures, including multiple shafts, diversion structures, gate and screening structures, gate control vaults, consolidation sewers and an overflow box culvert, along with sitework, restoration and utilities. Granite said that, once complete, the project will eliminate 550 million gallons of combined sewer releases annually; the figure is a forward-looking statement, not a measured result.
Data
Contract and scope figures
Contract value and tunnel scope figures stated in Granite’s announcement.
- Contract value (joint venture contract)
- ≈324.8 million USD
- 2026-10-01 · Observed
- Large-diameter tunnel length
- 22,300 linear feet
- 2026-10-01 · Target
- Tunnel diameter
- 20 feet
- 2026-10-01 · Target
- Ancillary tunnel length
- 3,115 linear feet
- 2026-10-01 · Target
- Combined sewer releases eliminated annually once complete
- 550 million gallons per year
- 2026-10-01 · Target
Methodology
The contract value is the approximate figure Granite gives for the joint venture contract; the release does not state each partner’s share. Tunnel lengths and diameter describe planned scope in the source’s units (feet). The annual reduction in combined sewer releases is Granite’s forward-looking statement about the completed project, not a measured result.
Updated:
Subjects and places
Subject proposals
- Infrastructure projectsSuggested
- Preserved editorial category/topic; broad candidate onlywww.graniteconstruction.com ↗
Geographic references
Only source-provided geographic references are shown. Opening an external map is optional. Optional story maps use OpenStreetMap. Opening a map sends your IP address and this site’s address to the map provider; location data remains readable as text without loading the map.
- United States · Place role: Coverage · Place type: Country or area · Location precision: RegionalEvidence
- Explicit preserved editorial country/region; no city or national centroid inferredwww.graniteconstruction.com ↗