[PDF][PDF] Iowa Design Manual for Low Water Stream Crossings

RL Rossmiller - Transportation Research Record, 1983 - onlinepubs.trb.org
Most counties have bridges that are no longer adequate and, therefore, are faced with a
large capital expenditure if the same type replacement structure is proposed. Because a low
water stream crossing (LWSC) may be an attractive low-cost alternative to replacing a costly
bridge, a manual has been developed to design LWSCs for use in Iowa. The purpose of the
manual is to provide consistent guidelines for county engineers and consultants designing
these crossings. An LWSC is defined as an unvented ford, a vented ford (one having some …

Design manual for low water stream crossings.

RL Rossmiller, RA Lohnes, SL Ring, JM Phillips… - 1983 - rosap.ntl.bts.gov
The purpose of this manual is to provide design guidelines for low water stream crossings
(LWSCs). Rigid criteria for determining the applicability of a LWSC to a given site are not
established since each site is unique in terms of physical, social, economic, and political
factors. Because conditions vary from county to county, it is not the intent to provide a