Home › South Dakota › Day County › 137TH Street over Creek

137TH Street over Creek

Day County, South Dakota · rated Poor in the 2025 National Bridge Inventory

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

137TH Street over Creek in Day County, South Dakota, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1926, making it 99 years old at the 2025 inventory.
It carries about 115 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 9 of the 34 inventoried bridges in Day County rated poor (26.5%); 9 (26.5%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 20 ft
Location	3.2 W & 1 S of Andover
NBI structure number	000000019008130
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
446A Avenue over Blue Dog Lake	2023	852	Good
SD027 over Antelope Ck	1970	428	Fair
SD027 over Ck	1970	428	Fair
130TH Street over Creek	1935	385	Fair
130TH Street over Creek	1930	376	Good
128TH Street over Creek	2011	307	Good