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Ia 62 over Maquoketa River

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

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

Ia 62 over Maquoketa River in Jackson County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1957, making it 68 years old at the 2025 inventory.
It carries about 2,030 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 138 of the 252 inventoried bridges in Jackson County rated fair (54.8%); 36 (14.3%) 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 653 ft
Location	1.1 Mi. E of Jct. Ia 64
NBI structure number	000000000030210
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 61 over Drainage Ditch	1967	8,100	Good
Y53 200TH Ave over Prairie Creek	2022	7,205	Good
US 61 NB over S Fork Maquoketa River	1967	5,100	Fair
US 61 SB over S Fork Maquoket River	1998	5,100	Fair
NB US 61 over Prairie Creek	1967	4,600	Fair
SB US 61 over Prairie Creek	1996	4,600	Good