US Bridges

Iris ST over E Fk Ltl Chariton

Good

Macon County, Missouri · S 23 T 60 N R 15 W · Structure no. 36169

Built
2019
6 years old
Condition
Good
inspected December 2023
Type
Tee Beam
Prestressed Concrete
Length
89 ft
1 main span
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

Iris ST over E Fk Ltl Chariton is a prestressed concrete tee beam carrying Iris ST over E Fk Ltl Chariton in Macon County, Missouri. It was built in 2019, so it is 6 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 30 vehicles a day, roughly 10% of them trucks, projected to reach 33 by 2044. The structure is 89 ft (27 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesIris ST
CrossesE Fk Ltl Chariton
LocationS 23 T 60 N R 15 W
RouteCounty Highway 65
CountyMacon County
StateMissouri
Coordinates39.99289, -92.54228
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.4 US tons
Inventory rating50.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length89 ft (27 m)
Longest span86 ft (26.1 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic33 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Iris ST over E Fk Ltl Chariton built?

It was built in 2019, making it 6 years old in 2025.

What condition is Iris ST over E Fk Ltl Chariton in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does Iris ST over E Fk Ltl Chariton carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Iris ST over E Fk Ltl Chariton?

The structure is 89 ft (27 m) long with a longest span of 86 ft (26.1 m) and a deck 25 ft wide.

Who owns Iris ST over E Fk Ltl Chariton?

It is owned by the County Highway Agency.