US Bridges

Is 49 N over Mo 86

Good

Newton County, Missouri · S 16 T 25 N R 32 W · Structure no. 4220

Built
1996
29 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
193 ft
4 main spans
Daily traffic
9,396
2024 count
Owner
State
State Highway Agency

About this bridge

Is 49 N over Mo 86 is a prestressed concrete continuous stringer/multi-beam or girder carrying Is 49 N over Mo 86 in Newton County, Missouri. It was built in 1996, so it is 29 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 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 9,396 vehicles a day, roughly 30% of them trucks, projected to reach 17,383 by 2044. The structure is 193 ft (58.8 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 49 N
CrossesMo 86
LocationS 16 T 25 N R 32 W
RouteInterstate 49
Coordinates36.88057, -94.43093
Functional classRural Principal Arterial - Interstate

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.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.3 US tons
Inventory rating48.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length193 ft (58.8 m)
Longest span49 ft (14.8 m)
Deck width41 ft (12.6 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,396 (2024)
Projected traffic17,383 by 2044
Trucks30%
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 49 N over Mo 86 built?

It was built in 1996, making it 29 years old in 2025.

What condition is Is 49 N over Mo 86 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 September 2023.

How much traffic does Is 49 N over Mo 86 carry?

About 9,396 vehicles per day (2024 count), of which roughly 30% are trucks.

How long is Is 49 N over Mo 86?

The structure is 193 ft (58.8 m) long with a longest span of 49 ft (14.8 m) and a deck 41 ft wide.

Who owns Is 49 N over Mo 86?

It is owned by the State Highway Agency.