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Tr 47 over West Fork Mazon R

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

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

Tr 47 over West Fork Mazon R in Livingston County, Illinois, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1920 and reconstructed in 1964, making it 105 years old at the 2025 inventory.
It carries about 50 vehicles a day (traffic count year 2023).
Its listed owner is a town or township highway agency.
It is one of 46 of the 579 inventoried bridges in Livingston County rated poor (7.9%); 46 (7.9%) 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	Steel stringer or multi-beam girder
Length	about 23 ft
Location	2085 E 2700 N
NBI structure number	053315700000000
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
Fai 55 over Wolf Creek	1976	22,300	Good
Fai-55 & E975 N Rd over Drainage Ditch	1977	21,000	Fair
I-55 over Stream	1977	21,000	Good
Ill 116 over Turtle Creek	1941	12,300	Good
I-55 SB over Norfolk & So. RR	2011	11,450	Fair
I-55 NB over Norfolk & So RR	2011	11,450	Fair