Bridge Dimensions
The following table is a comparison of published measurements of length, width and load recorded in different sources using different methods, as well as the name or names cited. NBI measures bridge length between the "backwalls of abutments" or pavement grooves and the roadway width as "the most restrictive minimum distance between curbs or rails". The NRHP form was prepared by the Pennsylvania Historical and Museum Commission (PHMC), which surveyed county engineers, historical and covered bridge societies, and others for all the covered bridges in the commonwealth. The Evans visited every covered bridge in Pennsylvania in 2001 and measured each bridge's length (portal to portal) and width (at the portal) for their book. The data in Zacher's book was based on a 1991 survey of all covered bridges in Pennsylvania by the PHMC and PennDOT, aided by local government and private agencies. The article uses primarily the NBI and NRHP data, as they are national programs.
| Length feet (m) |
Width feet (m) |
Load short tons (MT) |
Source (Year) |
|---|---|---|---|
| 25.6 metres (84.0 ft) | 4.3 metres (14.1 ft) | 4.5 metric tons (5.0 short tons) | NBI (2007) |
| 72 feet (21.9 m)* | 11 feet (3.4 m) | 3 short tons (2.7 t) | NRHP (1979) |
| 85 feet 9 inches (26.1 m) | 14 feet 1 inch (4.3 m) | NA | Evans (2001) |
| 72 feet (21.9 m)* | 14 feet (4.3 m) | NA | Zacher (1986) |
Read more about this topic: Gudgeonville Covered Bridge
Famous quotes containing the words bridge and/or dimensions:
“London Bridge is broken down,
Dance o’er my lady lee,
London Bridge is broken down,
With a gay lady.
How shall we build it up again?
Dance o’er my lady lee,”
—Unknown. London Bridge (l. 1–6)
“Words are finite organs of the infinite mind. They cannot cover the dimensions of what is in truth. They break, chop, and impoverish it.”
—Ralph Waldo Emerson (1803–1882)