Spring Field Review Site 10 2018Pender CountyBridge on NC 50 & NC 210 over ICW

Issue

Bottom of footing elevations did not leave adequate room for Contractor's formwork.

Action Item

Structures Management will consider revising Design Manual to recommend detailing bottom of footings a minimum of 3 feet above mean high water elevation or the ground elevation.

 

Issue

Drilled shaft permanent casing elevations, setting elevations vs. reviewing elevations.

Action Item

Geotechnical will review policy for determining drilled shaft permanent casing elevations.

 

Issue

Contractor noted substructure geometry was not consistent and resulted in less efficient construction.

Action Item

Structures Management will consider revising Design Manual to recommend detailing similar substructure configurations where practical.

 

Issue

Girders were over cambered and created issues with maintaining grade.

Action Item

Structures Management will review projects with similar girder types and lengths and investigate if those girders experienced camber issues.

 

Issue

Contractor experienced challenges with casting the bridge deck because interior barrier rail bars prevented the screed carriage from finishing the entire width of the deck.

Action Item

Structures Management and Construction will investigate and discuss details for casting bridge decks with interior barrier rails.

 

Issue

Additional easement had to be acquired for temporary work bridge.

Action Item

Roadway and Right of Way will ensure temporary work bridge is accounted for during property acquisition for future projects.

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