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TR-59 (Mermet Road over Sielbeck Ditch

Massac County, Illinois · rated Poor in the 2025 National Bridge Inventory

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

TR-59 (Mermet Road over Sielbeck Ditch in Massac County, Illinois, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 2018, making it 7 years old at the 2025 inventory.
It carries about 175 vehicles a day (traffic count year 2020).
Its listed owner is a town or township highway agency.
It is one of 11 of the 132 inventoried bridges in Massac County rated poor (8.3%); 11 (8.3%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Prestressed concrete multiple box beam
Length	about 48 ft
Location	6.3MI NW Metropolis
NBI structure number	064314900000000
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
I 24 over Or 4 Ft Massac St Pk	1970	31,400	Good
Interstate 24 over Ohio River	1973	31,400	Fair
I 24 over Georges Creek	1971	20,500	Fair
I 24 over E Fork Gurley Ditch	1971	19,800	Good
I 24 EB over Future Park Road	1970	15,700	Good
I 24 WB over Future Park Road	1970	15,700	Good