Home › Iowa › Worth County › Co Rd 105 over Drainage Ditch

Co Rd 105 over Drainage Ditch

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

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

Co Rd 105 over Drainage Ditch in Worth 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 5 (fair condition) on the 0-9 scale.
It was built in 1949 and reconstructed in 2016, making it 76 years old at the 2025 inventory.
It carries about 1,650 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 55 of the 116 inventoried bridges in Worth County rated fair (47.4%); 17 (14.7%) 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	Steel stringer or multi-beam girder
Length	about 35 ft
Location	100213503
NBI structure number	000000000054130
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-35 over Drainage Ditch	1972	20,600	Good
I-35 over Goose Creek	1972	20,100	Fair
NB I 35 over over UP RR	1970	10,700	Fair
SB I 35 over over UP RR	1970	10,500	Fair
NB I-35 over Elk Creek	1972	9,950	Fair
SB I-35 over Elk Creek	1972	9,750	Fair