The project: Alcoa Davenport Works’ expansion will house a new state-of-the-art heat treatment line and a patented chemical treatment process that Alcoa has developed to improve adhesive bonding for vehicle assemblies.

Investment: $300 million

Where: Located within the Riverdale plant, the expansion will occupy two buildings most recently used for parts storage and office space. The structures were constructed in 1980 for a new heat-treat line that never was added.

Contractor: General Constructors Inc., Bettendorf

Engineering company: Fluor, headquartered in Irving, Texas

Scope of construction: Demolition began in January of the existing offices and concrete floor. Crews still are excavating the area and have begun driving in pilings, which must go about 20 feet deep to the bedrock. A concrete base will be poured on top of the pilings to support the two new lines. In addition, a new 540-feet by 50-feet building will be constructed.

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Size: The two adjacent buildings both measure 680 feet long. One is 60 feet wide, and the other is 80 feet wide. The new equipment lines will span 640 feet.

Job creation: The expansion creates 150 new full-time jobs and helps retain some of Davenport Works’ existing 2,200 employees. It also will create 150 temporary construction jobs for many trades including workers in excavation, foundation work, electrical and mechanical work, pipefitting and insulators.