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N4690 (2166C) over Cave Springs Trib.

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

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

N4690 (2166C) over Cave Springs Trib. 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 substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1930 and reconstructed in 2010, making it 95 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	Steel stringer or multi-beam girder
Length	about 37 ft
Location	6.5SE of Grove
NBI structure number	028850000000000
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