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CR 600W over W Fork Big Walnut Creek

Boone County, Indiana · rated Poor in the 2025 National Bridge Inventory

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

CR 600W over W Fork Big Walnut Creek in Boone County, Indiana, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1980, making it 45 years old at the 2025 inventory.
It carries about 200 vehicles a day (traffic count year 2017).
Its listed owner is the county highway agency.
It is one of 12 of the 292 inventoried bridges in Boone County rated poor (4.1%); 12 (4.1%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Prestressed concrete multiple box beam
Length	about 28 ft
Location	00.90 N of CR 750 S
NBI structure number	0600154
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
I-65 over Prairie Creek	1948	73,132	Fair
CR 100 Ehall-baker over I-65 Sb/nb	1958	73,132	Fair
I-65 over Prairie Creek	2010	73,132	Good
I-465 WB over Zionsville Road	1967	57,399	Fair
I-65 NB over Prairie Creek Trail	2014	57,066	Fair
I-65 SB over Prairie Creek Trail	2014	57,066	Fair