Home › Oklahoma › Carter County › N3140 (1054C) over Walnut Bayou

N3140 (1054C) over Walnut Bayou

Carter County, Oklahoma · rated Good in the 2025 National Bridge Inventory

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

N3140 (1054C) over Walnut Bayou in Carter County, Oklahoma, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 2021, making it 4 years old at the 2025 inventory.
It carries about 270 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 124 of the 337 inventoried bridges in Carter County rated good (36.8%); 16 (4.7%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 69 ft
Location	.8E 2.7N Jct US70/US70A
NBI structure number	318660000000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-35 over Sewer Creek	1965	32,700	Fair
I-35 over Creek	1965	32,400	Fair
I-35 over Creek	1965	32,200	Fair
I-35 over Creek	1965	31,200	Good
I-35 over Tulip Creek	1968	30,800	Good
I-35 over Tulip Creek	1968	30,800	Good