Below are paragraphs from a Design Acceptance Package for a bridge replacement project. The…
Below are paragraphs from a Design Acceptance Package for a bridge replacement project. The sentence punctuation and capitalization have been removed, but commas within sentences are shown. Add correct punctuation and capitalization for the sentences
In the vicinity of Bridge No. 0648A, Interstate 7 is a four-lane divided freeway each direction has two 12-foot lanes, 10-foot outside shoulders and 6-foot inside shoulders the eastbound on-ramp from Highway 420 also crosses the bridge before merging with 1-77 south of the bridge as a result, the bridge varies in width
Traffic at the site is low enough that a single lane of traffic in each direction will be adequate during construction therefore, to expedite construction of the replacement structure, two alternatives have been evaluated both alternatives detour traffic through the use of a crossover that would detour eastbound traffic into the No. 1 westbound lane while westbound traffic would continue to use the No. 2 westbound lane under the first option, the bridge would be replaced using conventional construction techniques that would require traffic to be detoured for approximately 6 months under the second option, traffic would be detoured for only a short duration (approximately two weeks) while an entire new bridge (that would be constructed adjacent to the highway) would be transported into place
Since traffic volumes in the area can be adequately conveyed during construction by a single lane of traffic in each direction, the bridge will be replaced all at one time rather than one-half width at a time this will result in significant cost and time savings to the project
