Either of these will do.

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Note added at 12 mins (2014-02-03 21:44:42 GMT)
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'The **split delivery** was required as a result of accepting additional Project funding from the Federal Government specifically for pier removal.

(...)

The first contract amendment was issued on March 15, 2010, and was necessary to add scope for **splitting the delivery** of the Project into two separate construction contracts, one for the removal of Pier 36 (Pier 36 Removal Project) to be administered by the United States Army Corps of Engineers (the “Corps”), and one for the construction of the Brannan Street Wharf (Brannan Street Wharf Construction Project) to be administered by the Port.' (http://sfport.com/modules/showdocument.aspx?documentid=3232 )

'As a result, segmenting the procurement of design and construction services was first allowed by the U.S. Congress in 1893; however, the infrastructure sector’s use of this **split delivery** method was not fully assumed until passage of the Federal Aid Road Act in 1916 (Pietroforte and Miller 2002; Rein et al. 2004).' (http://web.mit.edu/sis07/www/gibson.pdf )

'For bidding and construction, **the Project was split into two separate contracts**, a demolition contract for removal of Pier 36 and portions of the Bulkhead Wharf, and a wharf construction contract for the remainder of demolition and construction of the new Wharf.
The **split delivery** was necessary because of the federal funding component.' (http://www.sf-port.org/modules/showdocument.aspx?documentid=... )