Two concrete abutments support the bridge above mean water level.
2.
The suspended portion of roadway comprises and is wide, carrying four lanes with a median divider strip at a height of above mean water level.
3.
The bridge has a length of 461 meters, with a main span of 60 meters and clearance for vessels at mean water level is 13 meters.
4.
The popularity of Eggemoggin Reach as a yachting area called for a wide channel at midspan with a minimum underclearance, placing the roadway at above mean water level.
5.
If strong winds are blowing offshore, situations can arise where mean water levels in a bay fall significantly, which poses a serious threat for ships tied up at piers.
6.
In order to allow the railway line to pass above the canal, the new bridge was to have a clearance of 42 metres over the canal's mean water level.
7.
Now, I could figure all of those out with astronomical / oceanographic data ( the period of the sun, the moon, the mean water level ) besides B and D . For those two, I'd need to do a regression analysis from the data I tabulated earlier.
8.
Where A would be the mean water level, B would be the amplitude of the lunar component of water levels, C would represent the period of the moon, D would be the amplitude of the solar component to water levels, E would represent the period of the sun ( it would be equal to 2? * 24 ), and F would be an offset between the start of the lunar cycle and start of the solar cycle.
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