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I-465 SB to I-74 E over I-465 US 421X Ramp

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

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

I-465 SB to I-74 E over I-465 US 421X Ramp in Marion 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 2001, making it 24 years old at the 2025 inventory.
It carries about 11,852 vehicles a day (traffic count year 2004).
Its listed owner is the state highway agency.
It is one of 475 of the 969 inventoried bridges in Marion County rated fair (49.0%); 46 (4.7%) 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	Continuous steel stringer or multi-beam girder
Length	about 1,686 ft
Location	00.04 S I-74
NBI structure number	049806
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-65 over 26TH Street	1968	167,273	Good
I-65 over 29TH Street	1968	167,273	Good
I-65 over West 30TH Street	1968	167,273	Fair
I-65 over Dr Ml King Drive	1968	164,000	Good
I-70 over Belmont Avenue	1967	163,150	Fair
I-70 over Sherman Drive CSX RR	2007	157,928	Good