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Summers Road over Roberson Ditch

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

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

Summers Road over Roberson Ditch in Knox County, Indiana, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1983, making it 42 years old at the 2025 inventory.
It carries about 110 vehicles a day (traffic count year 2015).
Its listed owner is the county highway agency.
It is one of 117 of the 290 inventoried bridges in Knox County rated good (40.3%); 13 (4.5%) 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


Structure	Continuous prestressed concrete single box beam
Length	about 83 ft
Location	00.68 SW of Bicknell Road
NBI structure number	4200158
Condition class	Good

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