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Decker Road over Plass Ditch

Knox County, Indiana · rated Fair in the 2025 National Bridge Inventory

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

Decker Road over Plass Ditch in Knox County, Indiana, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1972, making it 53 years old at the 2025 inventory.
It carries about 200 vehicles a day (traffic count year 2015).
Its listed owner is the county highway agency.
It is one of 160 of the 290 inventoried bridges in Knox County rated fair (55.2%); 13 (4.5%) 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 prestressed concrete stringer or multi-beam girder
Length	about 123 ft
Location	00.62 S of Henry Road
NBI structure number	4200079
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 41 NB over 2 City Streets CSX RR	1961	21,710	Good
US 41 SB over 2 City Streets CSX RR	1961	21,710	Good
US 41 NB (middle) over US 50 WB Ramp to US 41 S	1967	19,317	Good
Hart Street over US 41 Nb/sb	1967	17,173	Fair
US 41 NB over Snapp Creek	1963	15,500	Good
US 41 SB over Snapp Creek	1963	15,500	Good