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N4550 Rd over I-40 Under

Sequoyah County, Oklahoma · rated Fair in the 2025 National Bridge Inventory

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

N4550 Rd over I-40 Under in Sequoyah County, Oklahoma, 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 1967, making it 58 years old at the 2025 inventory.
It carries about 125 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 155 of the 262 inventoried bridges in Sequoyah County rated fair (59.2%); 9 (3.4%) 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 229 ft
Location	11.00 E Muskogee C/l
NBI structure number	169640000000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
U.S. 64 over Ark River & R.R./ Co.rd.	1973	32,947	Fair
I-40 WB over U.S. 64 Under	2020	23,340	Good
I-40 EB over U.S. 64 Under	2020	23,340	Fair
I-40 WB over Little Sallisaw Creek	2020	23,340	Good
I-40 EB over Little Sallisaw Creek	2020	23,340	Good
I-40 over Farm Rd Under	1967	19,600	Fair