US Bridges

Is 44 W over US 166

Fair

Newton County, Missouri · S 11 T 26 N R 34 W · Structure no. 6551

Built
1956
69 years old, rebuilt 1994
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
141 ft
3 main spans
Daily traffic
15,699
2024 count
Owner
State
State Highway Agency

About this bridge

Is 44 W over US 166 is a steel continuous stringer/multi-beam or girder carrying Is 44 W over US 166 in Newton County, Missouri. It was built in 1956 and reconstructed in 1994, so it is 69 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 15,699 vehicles a day, roughly 32% of them trucks, projected to reach 29,043 by 2044. The structure is 141 ft (43 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 44 W
CrossesUS 166
LocationS 11 T 26 N R 34 W
RouteInterstate 44
Coordinates36.99819, -94.6124
Functional classRural Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating33.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length141 ft (43 m)
Longest span52 ft (15.8 m)
Deck width40 ft (12.1 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,699 (2024)
Projected traffic29,043 by 2044
Trucks32%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 44 W over US 166 built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1994.

What condition is Is 44 W over US 166 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 2023.

How much traffic does Is 44 W over US 166 carry?

About 15,699 vehicles per day (2024 count), of which roughly 32% are trucks.

How long is Is 44 W over US 166?

The structure is 141 ft (43 m) long with a longest span of 52 ft (15.8 m) and a deck 40 ft wide.

Who owns Is 44 W over US 166?

It is owned by the State Highway Agency.