MONBI 18348 (Missouri bridge number on the National Bridge Inventory)
BH 58111 (Bridgehunter.com ID)
Inspection report (as of October 2018)
Overall condition: Poor
Superstructure condition rating: Poor(4 out of 9)
Substructure condition rating: Fair(5 out of 9)
Deck condition rating: Fair(5 out of 9)
Sufficiency rating: 22.9 (out of 100) View more at BridgeReports.com
Jerry, I believe that's a different bridge than this one. The info for this bridge lists it as a steel stringer, and google maps seems to agree.
https://bridgehunter.com/mo/boone/burnett/ I suspect that's the bridge you were looking at.