US Bridges

Iowas RD over Lake CR

Fair

Chariton County, Missouri · S 30 T 54 N R 19 W · Structure no. 22117

Built
1920
105 years old, rebuilt 1984
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
25
2024 count
Owner
County
County Highway Agency

About this bridge

Iowas RD over Lake CR is a steel stringer/multi-beam or girder carrying Iowas RD over Lake CR in Chariton County, Missouri. It was built in 1920 and reconstructed in 1984, so it is 105 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 6 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 28 by 2044. The structure is 50 ft (15.2 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesIowas RD
CrossesLake CR
LocationS 30 T 54 N R 19 W
RouteCounty Highway 341
CountyChariton County
StateMissouri
Coordinates39.46046, -93.07755
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length50 ft (15.2 m)
Longest span49 ft (14.9 m)
Deck width23 ft (7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic28 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Iowas RD over Lake CR built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1984.

What condition is Iowas RD over Lake 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 September 2024.

How much traffic does Iowas RD over Lake CR carry?

About 25 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Iowas RD over Lake CR?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.9 m) and a deck 23 ft wide.

Who owns Iowas RD over Lake CR?

It is owned by the County Highway Agency.