Home › Iowa › Jasper County › FM over Calhoun Creek

FM over Calhoun Creek

Jasper County, Iowa · rated Good in the 2025 National Bridge Inventory

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

FM over Calhoun Creek in Jasper County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
It was built in 2007, making it 18 years old at the 2025 inventory.
It carries about 530 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 148 of the 382 inventoried bridges in Jasper County rated good (38.7%); 108 (28.3%) are rated poor.
Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
Its condition class and component ratings are unchanged from the 2024 inventory.
Its most recent inspection on record is dated April 2023, on a 48-month routine inspection cycle.
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

Component	Rating (2024)	Rating (2025)	FHWA scale meaning
Culvert	7	7	Good condition


Structure	Continuous concrete culvert
Length	about 26 ft
Location	078203207
NBI structure number	000000000195921
Condition class	Good
Traffic status (item 41)	Open, no restriction
Last inspection (item 90)	April 2023
Inspection interval (item 91)	48 months
Scour (item 113)	8: foundations stable, scour above the top of the footing

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

Bridge	Built	Vehicles/day	Condition
I-80 over Drainage Ditch	1959	33,400	Fair
I-80 over Elk Creek	1961	30,500	Fair
I-80 over Drainage Ditch	1961	30,500	Fair
EB I-80 over West 148TH St South	1959	18,350	Fair
EB I-80 over South Skunk River	1960	18,350	Fair
WB I-80 over West 148TH Street South	1959	18,050	Fair