US Bridges

US 36 E over S Br of Muddy CR

Fair

Linn County, Missouri · S 12 T 57 N R 21 W · Structure no. 565

Built
1961
64 years old, rebuilt 1974
Condition
Fair
inspected December 2024
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
13,161
2024 count
Owner
State
State Highway Agency

About this bridge

US 36 E over S Br of Muddy CR is a concrete continuous culvert carrying US 36 E over S Br of Muddy CR in Linn County, Missouri. It was built in 1961 and reconstructed in 1974, so it is 64 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 5 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 13,161 vehicles a day, roughly 41% of them trucks, projected to reach 23,032 by 2044. The structure is 23 ft (7 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 36 E
CrossesS Br of Muddy CR
LocationS 12 T 57 N R 21 W
RouteU.S. Route 36
Coordinates39.77793, -93.20619
Functional classRural Principal Arterial - Other

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.4 US tons
Inventory rating46.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,161 (2024)
Projected traffic23,032 by 2044
Trucks41%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 36 E over S Br of Muddy CR built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1974.

What condition is US 36 E over S 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 US 36 E over S Br of Muddy CR carry?

About 13,161 vehicles per day (2024 count), of which roughly 41% are trucks.

How long is US 36 E over S Br of Muddy CR?

The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m).

Who owns US 36 E over S Br of Muddy CR?

It is owned by the State Highway Agency.