Aging MDOT Cast-in-Place Culvert Replaced with Precast

Bill Washabaugh, Northern Concrete Pipe, Inc.
Will Thompson, P.E., Lansing Transportation Service Center Manager Michigan Department of Transportation

An aging three-sided cast-in-place (7-foot x 7-foot) box culvert constructed in 1946 under M-43, west of Grand Ledge, MI was compromised by degradational scour, which undermined its foundation and footings. M-43 is a critical roadway owned by the Michigan Department of Transportation (MDOT) that links industry, commerce, agriculture, and residents. The failing structure was identified through MDOT’s ongoing condition surveys of existing culverts and bridges. MDOT closed the road and specified a 12-foot x 6-foot precast concrete box culvert to expedite the replacement of the failing structure.

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09Nov 2015

This is a demonstration of the comparative flammability of polypropylene pipe (PP), reinforced concrete pipe (RCP), and high density polyethylene pipe (HDPE). Dry hay is ignited in three 18 in. by 18 in. pipes and allowed to burn. This is an unedited test conducted on October 21, 2015.