US Bridges

US 36 E over Mussel Fk

Fair

Linn County, Missouri · S 7 T 57 N R 17 W · Structure no. 4823

Built
1951
74 years old, rebuilt 1994
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
325 ft
3 main spans
Daily traffic
9,524
2024 count
Owner
State
State Highway Agency

About this bridge

US 36 E over Mussel Fk is a steel continuous stringer/multi-beam or girder carrying US 36 E over Mussel Fk in Linn County, Missouri. It was built in 1951 and reconstructed in 1994, so it is 74 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 9,524 vehicles a day, roughly 41% of them trucks, projected to reach 16,667 by 2044. The structure is 325 ft (99.1 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 36 E
CrossesMussel Fk
LocationS 7 T 57 N R 17 W
RouteU.S. Route 36
Coordinates39.75901, -92.85639
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating23.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadH 20
Structure length325 ft (99.1 m)
Longest span80 ft (24.4 m)
Deck width31 ft (9.5 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,524 (2024)
Projected traffic16,667 by 2044
Trucks41%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.2 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 36 E over Mussel Fk built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1994.

What condition is US 36 E over Mussel Fk 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 September 2024.

How much traffic does US 36 E over Mussel Fk carry?

About 9,524 vehicles per day (2024 count), of which roughly 41% are trucks.

How long is US 36 E over Mussel Fk?

The structure is 325 ft (99.1 m) long with a longest span of 80 ft (24.4 m) and a deck 31 ft wide.

Who owns US 36 E over Mussel Fk?

It is owned by the State Highway Agency.