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E1720 over Rock Creek

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

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

E1720 over Rock Creek in Murray 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 1992, making it 33 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 66 of the 128 inventoried bridges in Murray County rated fair (51.6%); 2 (1.6%) 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 96 ft
Location	1.0 Mi N of Sulphur
NBI structure number	235000000000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-35 over Creek	1969	25,600	Fair
I-35 over Lick Branch Creek	1969	25,600	Fair
I-35 NB over U.S. 77 Under	1969	15,800	Fair
I-35 NB over Wild Horse Creek Oflow	1969	15,800	Fair
I-35 NB over Wild Horse Creek	1969	15,800	Fair
I-35 NB over S.H. 77D Under	1969	15,600	Fair