Home › Missouri › Perry County › Rt M S over Is 55

Rt M S over Is 55

Perry County, Missouri · rated Fair in the 2025 National Bridge Inventory

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

Rt M S over Is 55 in Perry County, Missouri, 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 1970 and reconstructed in 1984, making it 55 years old at the 2025 inventory.
It carries about 790 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 66 of the 122 inventoried bridges in Perry County rated fair (54.1%); 21 (17.2%) 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	Continuous steel stringer or multi-beam girder
Length	about 254 ft
Location	S 33 T 36 N R 10 E
NBI structure number	2123
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Is 55 S over Apple CR	1970	11,280	Good
Mo 51 S over Is 55	1970	10,761	Poor
Is 55 S over Saline CR	1970	9,523	Fair
Is 55 N over Saline CR	1970	9,485	Fair
Is 55 N over Tyler Br	1971	9,389	Fair
Is 55 S over Tyler Br	1971	9,274	Good