US Bridges

Thorn RD over Trib of Murphy CR

Fair

Jasper County, Missouri · S 14 T 30 N R 33 W · Structure no. 12672

Built
1966
59 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
10
2023 count
Owner
County
County Highway Agency

About this bridge

Thorn RD over Trib of Murphy CR is a concrete culvert carrying Thorn RD over Trib of Murphy CR in Jasper County, Missouri. It was built in 1966, so it is 59 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 10 vehicles a day, roughly 10% of them trucks, projected to reach 15 by 2043. The structure is 22 ft (6.7 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesThorn RD
CrossesTrib of Murphy CR
LocationS 14 T 30 N R 33 W
RouteCounty Highway 17
CountyJasper County
StateMissouri
Coordinates37.34725, -94.53085
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.7 US tons
Inventory rating18.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadOther
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic15 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Thorn RD over Trib of Murphy CR built?

It was built in 1966, making it 59 years old in 2025.

What condition is Thorn RD over Trib of Murphy 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 Thorn RD over Trib of Murphy CR carry?

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

How long is Thorn RD over Trib of Murphy CR?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 26 ft wide.

Who owns Thorn RD over Trib of Murphy CR?

It is owned by the County Highway Agency.