US Bridges

Old HWY 36 over BNSF RR

PoorPosted for load

Macon County, Missouri · S 17 T 57 N R 15 W · Structure no. 25087

Built
1925
100 years old
Condition
Poor
inspected January 2024
Type
Tee Beam
Concrete
Length
105 ft
3 main spans
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

Old HWY 36 over BNSF RR is a concrete tee beam carrying Old HWY 36 over BNSF RR in Macon County, Missouri. It was built in 1925, so it is 100 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2044. The structure is 105 ft (32 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesOld HWY 36
CrossesBNSF RR
LocationS 17 T 57 N R 15 W
RouteCounty Highway 621
CountyMacon County
StateMissouri
Coordinates39.7547, -92.60665
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating13.9 US tons
Inventory rating7.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length105 ft (32 m)
Longest span38 ft (11.6 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic39 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$749,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Old HWY 36 over BNSF RR built?

It was built in 1925, making it 100 years old in 2025.

What condition is Old HWY 36 over BNSF RR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2024.

How much traffic does Old HWY 36 over BNSF RR carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Old HWY 36 over BNSF RR?

The structure is 105 ft (32 m) long with a longest span of 38 ft (11.6 m) and a deck 22 ft wide.

Who owns Old HWY 36 over BNSF RR?

It is owned by the County Highway Agency.