ASB Bridge

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**ASB Bridge**
Image:Asb-bridge.jpg ASB Bridge from Westport Landing
Official name	Armour-Swift-Burlington Bridge
Crosses	Missouri River
Locale	Kansas City, Missouri to North Kansas City, Missouri
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The Armour-Swift-Burlington (ASB) Bridge is a rail crossing over the Missouri River in Kansas City, Missouri that formerly also handled car traffic.

It was designed in 1912 by John Alexander Low Waddell. The bridge is one of two of this type that had car traffic on Route 9 on the upper level, and rail traffic on the lower level. The lower deck could be raised to permit riverboats to pass without interrupting car traffic on top.

It was built by a combination of Armour Packing Company, Swift & Company, and Burlington Railroad.

In 1987 the Heart of America Bridge bridge opened to the east to replace the vehicular portion.

In 1996 the remaining part of the ASB was designated as a national landmark in civil engineering. The bridge is now owned by and used by the BNSF Railroad. The ASB has a 428 foot main span, and makes it the ninth longest vertical lift draw bridge in the United States.