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Smith Road/mss 099 over So Br Hillsboro Lk

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

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

Smith Road/mss 099 over So Br Hillsboro Lk in Montgomery County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1900 and reconstructed in 1976, making it 125 years old at the 2025 inventory.
It carries about 1,000 vehicles a day (traffic count year 2020).
Its listed owner is a city or municipal highway agency.
It is one of 116 of the 261 inventoried bridges in Montgomery County rated fair (44.4%); 10 (3.8%) 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	Prestressed concrete multiple box beam
Length	about 42 ft
Location	N Edge Schram City
NBI structure number	068316400000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-55 over Horse Creek	1972	31,350	Fair
I-55 and FRs over Horse Creek	1950	29,350	Fair
FAI 55 and FRs over Shop Creek Trib	1942	26,800	Fair
I-55 and FRs over Shop Creek	1943	26,800	Fair
I-55 over Three Mile Branch	1973	26,500	Fair
I-55 (NB) over Macoupin Creek	1972	14,400	Fair