US Bridges

Mo 72 E over Mo 21 UP RR CR

Fair

Iron County, Missouri · S 5 T 33 N R 4 E · Structure no. 5294

Built
1930
95 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete
Length
275 ft
6 main spans
Daily traffic
2,672
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 72 E over Mo 21 UP RR CR is a concrete tee beam carrying Mo 72 E over Mo 21 UP RR CR in Iron County, Missouri. It was built in 1930, so it is 95 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 2,672 vehicles a day, roughly 11% of them trucks, projected to reach 4,008 by 2044. The structure is 275 ft (83.8 m) long and 33 ft wide. If it were closed, the detour would be 47.8 mi (77 km).

Location

Open in Google Maps
CarriesMo 72 E
CrossesMo 21 UP RR CR
LocationS 5 T 33 N R 4 E
RouteState Highway 72
CountyIron County
StateMissouri
Coordinates37.59012, -90.62435
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.6 US tons
Inventory rating28.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length275 ft (83.8 m)
Longest span52 ft (16 m)
Deck width33 ft (10.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,672 (2024)
Projected traffic4,008 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed47.8 mi (77 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 72 E over Mo 21 UP RR CR built?

It was built in 1930, making it 95 years old in 2025.

What condition is Mo 72 E over Mo 21 UP RR 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 October 2023.

How much traffic does Mo 72 E over Mo 21 UP RR CR carry?

About 2,672 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Mo 72 E over Mo 21 UP RR CR?

The structure is 275 ft (83.8 m) long with a longest span of 52 ft (16 m) and a deck 33 ft wide.

Who owns Mo 72 E over Mo 21 UP RR CR?

It is owned by the State Highway Agency.