US Bridges

Sixth ST over Trib of Howell CR

Good

Howell County, Missouri · S 20 T 24 N R 8 W · Structure no. 24090

Built
1975
50 years old
Condition
Good
inspected November 2024
Type
Slab
Concrete Continuous
Length
47 ft
3 main spans
Daily traffic
500
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sixth ST over Trib of Howell CR is a concrete continuous slab carrying Sixth ST over Trib of Howell CR in Howell County, Missouri. It was built in 1975, so it is 50 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 500 vehicles a day, roughly 10% of them trucks, projected to reach 725 by 2043. The structure is 47 ft (14.3 m) long and 38 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSixth ST
CrossesTrib of Howell CR
LocationS 20 T 24 N R 8 W
RouteCity Street 0
Coordinates36.73703, -91.87276
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length47 ft (14.3 m)
Longest span15 ft (4.6 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic725 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Sixth ST over Trib of Howell CR built?

It was built in 1975, making it 50 years old in 2025.

What condition is Sixth ST over Trib of Howell CR 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 November 2024.

How much traffic does Sixth ST over Trib of Howell CR carry?

About 500 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Sixth ST over Trib of Howell CR?

The structure is 47 ft (14.3 m) long with a longest span of 15 ft (4.6 m) and a deck 38 ft wide.

Who owns Sixth ST over Trib of Howell CR?

It is owned by the City or Municipal Highway Agency.