- The Mississippian (/ˌmɪsɪˈsɪpi.ən/ miss-ə-SIP-ee-ən, also known as Lower Carboniferous or Early Carboniferous) is a subperiod in the geologic timescale or a subsystem of the geologic record. It is the earlier of two subperiods of the Carboniferous period lasting from roughly 358.9 to 323.2 million years ago. As with most other geochronologic units, the rock beds that define the Mississippian are well identified, but the exact start and end dates are uncertain by a few million years. The Mississippian is so named because rocks with this age are exposed in the Mississippi Valley.
- Hastings Bridge (Wikipedia)
The Hastings Bridge is a free standing tied-arch bridge that spans the Mississippi River in Hastings, Minnesota, United States. It was designed by Parsons and was built in 2013 by Lunda Construction Company for $119,830,000. The Hastings Bridge replaces the former Hastings High Bridge, which was built in 1951 and demolished in 2013 when the replacement bridge was completed. The Hastings High Bridge had been scheduled to be torn down and replaced in 2019, but after the I-35W bridge collapse in Minneapolis, the MNDOT re-prioritized the replacement and construction of the new bridge started in 2010.