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Sheridan Ave over Ralston Creek S Branch

Johnson County, Iowa · rated Fair in the 2025 National Bridge Inventory

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

Sheridan Ave over Ralston Creek S Branch in Johnson County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1957, making it 68 years old at the 2025 inventory.
It carries about 2,105 vehicles a day (traffic count year 2022).
Its listed owner is a city or municipal highway agency.
It is one of 186 of the 376 inventoried bridges in Johnson County rated fair (49.5%); 34 (9.0%) 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	Concrete stringer or multi-beam girder
Length	about 21 ft
Location	079061400
NBI structure number	000000000006290
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I 80 EB over Iowa River	1960	32,900	Good
US 218 over Deer Creek	1970	32,400	Good
I 80 WB over Iowa River	1960	32,050	Good
EB I-80 over over US 6 & Iais RR	1995	31,000	Fair
I 80 WB over over US 6 & Iais RR	1992	31,000	Fair
EB I-80 over Cic Railway	1963	30,600	Fair