US Bridges

US 36 W over Mid Fk Salt Rvr

Fair

Macon County, Missouri · S 7 T 57 N R 13 W · Structure no. 1732

Built
1971
54 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
272 ft
5 main spans
Daily traffic
5,248
2024 count
Owner
State
State Highway Agency

About this bridge

US 36 W over Mid Fk Salt Rvr is a steel continuous stringer/multi-beam or girder carrying US 36 W over Mid Fk Salt Rvr in Macon County, Missouri. It was built in 1971, so it is 54 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 5,248 vehicles a day, roughly 41% of them trucks, projected to reach 9,184 by 2044. The structure is 272 ft (82.9 m) long and 47 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesUS 36 W
CrossesMid Fk Salt Rvr
LocationS 7 T 57 N R 13 W
RouteU.S. Route 36
CountyMacon County
StateMissouri
Coordinates39.75251, -92.4021
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length272 ft (82.9 m)
Longest span60 ft (18.3 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,248 (2024)
Projected traffic9,184 by 2044
Trucks41%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 W over Mid Fk Salt Rvr built?

It was built in 1971, making it 54 years old in 2025.

What condition is US 36 W over Mid Fk Salt Rvr 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 2023.

How much traffic does US 36 W over Mid Fk Salt Rvr carry?

About 5,248 vehicles per day (2024 count), of which roughly 41% are trucks.

How long is US 36 W over Mid Fk Salt Rvr?

The structure is 272 ft (82.9 m) long with a longest span of 60 ft (18.3 m) and a deck 47 ft wide.

Who owns US 36 W over Mid Fk Salt Rvr?

It is owned by the State Highway Agency.