US Bridges

Mo 221 N over ST Francis Rvr

Fair

St. Francois County, Missouri · S 2989 T 35 N R 5 E · Structure no. 6177

Built
1948
77 years old, rebuilt 2007
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
213 ft
5 main spans
Daily traffic
8,254
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 221 N over ST Francis Rvr is a concrete tee beam carrying Mo 221 N over ST Francis Rvr in St. Francois County, Missouri. It was built in 1948 and reconstructed in 2007, so it is 77 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 8,254 vehicles a day, roughly 5% of them trucks, projected to reach 14,032 by 2044. The structure is 213 ft (64.9 m) long and 30 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

CarriesMo 221 N
CrossesST Francis Rvr
LocationS 2989 T 35 N R 5 E
RouteState Highway 221
Coordinates37.76511, -90.46434
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34.7 US tons
Inventory rating20.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length213 ft (64.9 m)
Longest span52 ft (16 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,254 (2024)
Projected traffic14,032 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.4 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 221 N over ST Francis Rvr built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 2007.

What condition is Mo 221 N over ST Francis 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 October 2024.

How much traffic does Mo 221 N over ST Francis Rvr carry?

About 8,254 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Mo 221 N over ST Francis Rvr?

The structure is 213 ft (64.9 m) long with a longest span of 52 ft (16 m) and a deck 30 ft wide.

Who owns Mo 221 N over ST Francis Rvr?

It is owned by the State Highway Agency.