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Route 340 over Big Run

Rockingham County, Virginia · rated Fair in the 2025 National Bridge Inventory

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

Route 340 over Big Run in Rockingham County, Virginia, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1941, making it 84 years old at the 2025 inventory.
It carries about 3,921 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 125 of the 287 inventoried bridges in Rockingham County rated fair (43.6%); 9 (3.1%) 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	Concrete stringer or multi-beam girder
Length	about 84 ft
Location	4.02 Rt 708 - 1.09 Rt 754
NBI structure number	000000000015891
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Route 0081 over Trib Dry Fork	1960	52,694	Fair
Route 0081 over Dry Fork Creek	1966	52,192	Fair
I-81 Nbl over Blacks Run	1966	29,699	Fair
I-81 Sbl over Blacks Run	1959	28,820	Fair
I-81 Sbl over NS Railway	1959	28,820	Fair
I-81 Nbl over Blacks Run	1959	28,521	Fair