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Fas 1600 (ch 12) over Mallard Creek

Hancock County, Illinois · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Fas 1600 (ch 12) over Mallard Creek in Hancock County, Illinois, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 9 (excellent condition) on the 0-9 scale.
It was built in 2023, making it 2 years old at the 2025 inventory.
It carries about 375 vehicles a day (traffic count year 2018).
Its listed owner is the county highway agency.
It is one of 122 of the 290 inventoried bridges in Hancock County rated good (42.1%); 63 (21.7%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous prestressed concrete stringer or multi-beam girder
Length	about 63 ft
Location	5 mi S Warsaw
NBI structure number	034312300000000
Condition class	Good

Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.

Bridge	Built	Vehicles/day	Condition
US 136 over Hamilton Slough	1954	10,500	Good
US 136 over Miss R/1ST/KEOKUK Jct RR	1985	10,500	Fair
Il 336 over Trib to Praire CR	2006	4,200	Good
Il 94 (NB) over Slater Creek	2003	4,050	Fair
Il 94 (SB) over Slater Creek	2002	4,050	Fair
US 136 over Il 336	2006	4,000	Good