US Bridges

Old RTE 21 over Stouts CR

Fair

Iron County, Missouri · S 5 T 33 N R 4 E · Structure no. 12555

Built
1926
99 years old
Condition
Fair
inspected February 2025
Type
Tee Beam
Concrete
Length
190 ft
4 main spans
Daily traffic
4,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Old RTE 21 over Stouts CR is a concrete tee beam carrying Old RTE 21 over Stouts CR in Iron County, Missouri. It was built in 1926, so it is 99 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 4,000 vehicles a day, roughly 10% of them trucks, projected to reach 5,200 by 2043. The structure is 190 ft (57.9 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesOld RTE 21
CrossesStouts CR
LocationS 5 T 33 N R 4 E
RouteCity Street 0
CountyIron County
StateMissouri
Coordinates37.5928, -90.628
Functional classUrban Local

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 protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length190 ft (57.9 m)
Longest span48 ft (14.6 m)
Deck width33 ft (10.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2023)
Projected traffic5,200 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old RTE 21 over Stouts CR built?

It was built in 1926, making it 99 years old in 2025.

What condition is Old RTE 21 over Stouts 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 February 2025.

How much traffic does Old RTE 21 over Stouts CR carry?

About 4,000 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Old RTE 21 over Stouts CR?

The structure is 190 ft (57.9 m) long with a longest span of 48 ft (14.6 m) and a deck 33 ft wide.

Who owns Old RTE 21 over Stouts CR?

It is owned by the City or Municipal Highway Agency.