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I 57 SB over Marcum Branch

Franklin County, Illinois · rated Fair in the 2025 National Bridge Inventory

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

I 57 SB over Marcum Branch in Franklin County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1962 and reconstructed in 1994, making it 63 years old at the 2025 inventory.
It carries about 17,150 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 63 of the 310 inventoried bridges in Franklin County rated fair (20.3%); 9 (2.9%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Continuous steel stringer or multi-beam girder
Length	about 127 ft
Location	3 Mi N Benton
NBI structure number	028001100000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I 57 over Tr 213 Linn Rd	1962	37,200	Fair
I 57 over Drain Ditch (rend L)	1963	35,700	Fair
I-57 NB over Pond Creek	2022	19,900	Fair
I-57 SB over Pond Creek	2022	19,900	Fair
Interstate 57 NB over 7TH St	2012	18,600	Fair
Interstate 57 SB over 7TH St	2012	18,600	Fair