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Irr N4601 (2134C) over Brush Creek; Lake Eucha

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

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

Irr N4601 (2134C) over Brush Creek; Lake Eucha in Delaware County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1991, making it 34 years old at the 2025 inventory.
It carries about 100 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 76 of the 161 inventoried bridges in Delaware County rated fair (47.2%); 27 (16.8%) 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	Prestressed concrete tee beam
Length	about 136 ft
Location	5.0 Mi S of Jay
NBI structure number	230980000000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
S.H. 10 over Creek	1946	11,300	Fair
N4620 (2108C) over Creek	2018	8,240	Good
U.S. 59 over Drowning Creek	1973	7,600	Fair
U.S. 59 over Elm Branch Creek	1925	7,300	Fair
U.S. 59 over Honey Creek	2002	7,300	Fair
Cherokee Tp over Creek	1991	6,300	Good