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Tr 47 over Red Oak Ditch

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

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

Tr 47 over Red Oak Ditch in Mason 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 8 (very good condition) on the 0-9 scale.
It was built in 2007, making it 18 years old at the 2025 inventory.
It carries about 75 vehicles a day (traffic count year 2024).
Its listed owner is a town or township highway agency.
It is one of 31 of the 86 inventoried bridges in Mason County rated good (36.0%); 3 (3.5%) 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	Prestressed concrete multiple box beam
Length	about 65 ft
Location	4 M SE Forrest City
NBI structure number	063331300000000
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 / Il 29 over Main Ditch	1958	2,500	Fair
Ill 29 over Allens Grove Ditch	1959	2,450	Good
Fap 614 (il 78) over Ditch	1978	2,250	Fair
Il 29 over Sleepy Hollow Ditch	1959	2,000	Fair
Il 29 over Salt Creek	2002	2,000	Fair
Ill 78 over White Oak Creek	1931	1,750	Fair