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Monarch Ave over Carson Creek

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

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

Monarch Ave over Carson 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 deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 2012, making it 13 years old at the 2025 inventory.
It carries about 91 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.
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

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