US Bridges

Mo 3 S over BNSF RR

Fair

Macon County, Missouri · S 7 T 57 N R 15 W · Structure no. 5897

Built
1936
89 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
158 ft
3 main spans
Daily traffic
300
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 3 S over BNSF RR is a concrete tee beam carrying Mo 3 S over BNSF RR in Macon County, Missouri. It was built in 1936, so it is 89 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 300 vehicles a day, roughly 13% of them trucks, projected to reach 375 by 2044. The structure is 158 ft (48.2 m) long and 39 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

Location

Open in Google Maps
CarriesMo 3 S
CrossesBNSF RR
LocationS 7 T 57 N R 15 W
RouteState Highway 3
CountyMacon County
StateMissouri
Coordinates39.76007, -92.62386
Functional classRural Major Collector

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.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.6 US tons
Inventory rating32.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length158 ft (48.2 m)
Longest span52 ft (16 m)
Deck width39 ft (12 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2024)
Projected traffic375 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed34.2 mi (55 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mo 3 S over BNSF RR built?

It was built in 1936, making it 89 years old in 2025.

What condition is Mo 3 S over BNSF RR 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 Mo 3 S over BNSF RR carry?

About 300 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Mo 3 S over BNSF RR?

The structure is 158 ft (48.2 m) long with a longest span of 52 ft (16 m) and a deck 39 ft wide.

Who owns Mo 3 S over BNSF RR?

It is owned by the State Highway Agency.