US Bridges

Salem RD over Blythes CR

Fair

Miller County, Missouri · S 27 T 42 N R 15 W · Structure no. 14388

Built
1922
103 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Salem RD over Blythes CR is a concrete slab carrying Salem RD over Blythes CR in Miller County, Missouri. It was built in 1922, so it is 103 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 170 by 2043. The structure is 23 ft (7 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSalem RD
CrossesBlythes CR
LocationS 27 T 42 N R 15 W
RouteCounty Highway 66
CountyMiller County
StateMissouri
Coordinates38.36442, -92.55758
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width22 ft (6.6 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic170 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Salem RD over Blythes CR built?

It was built in 1922, making it 103 years old in 2025.

What condition is Salem RD over Blythes CR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.

How much traffic does Salem RD over Blythes CR carry?

About 100 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Salem RD over Blythes CR?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 22 ft wide.

Who owns Salem RD over Blythes CR?

It is owned by the County Highway Agency.