US Bridges

CO RD SE 971 over Br of Muddy CR

FairPosted for load

Johnson County, Missouri · S 4 T 44 N R 24 W · Structure no. 24256

Built
1900
125 years old, rebuilt 1982
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
45
2023 count
Owner
County
County Highway Agency

About this bridge

CO RD SE 971 over Br of Muddy CR is a steel stringer/multi-beam or girder carrying CO RD SE 971 over Br of Muddy CR in Johnson County, Missouri. It was built in 1900 and reconstructed in 1982, so it is 125 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. Its operating status is: posted for load restriction.

It carries about 45 vehicles a day, roughly 10% of them trucks, projected to reach 72 by 2043. The structure is 35 ft (10.7 m) long and 19 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCO RD SE 971
CrossesBr of Muddy CR
LocationS 4 T 44 N R 24 W
RouteCounty Highway 470
CountyJohnson County
StateMissouri
Coordinates38.61745, -93.5683
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating14.9 US tons
Inventory rating7.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length35 ft (10.7 m)
Longest span35 ft (10.7 m)
Deck width19 ft (5.9 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2023)
Projected traffic72 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$211,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD SE 971 over Br of Muddy CR built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1982.

What condition is CO RD SE 971 over Br of Muddy 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 December 2024.

How much traffic does CO RD SE 971 over Br of Muddy CR carry?

About 45 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is CO RD SE 971 over Br of Muddy CR?

The structure is 35 ft (10.7 m) long with a longest span of 35 ft (10.7 m) and a deck 19 ft wide.

Who owns CO RD SE 971 over Br of Muddy CR?

It is owned by the County Highway Agency.