US Bridges

Mo 161 S over US 61

Good

Pike County, Missouri · S 30 T 53 N R 3 W · Structure no. 2936

Built
1996
29 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
310 ft
2 main spans
Daily traffic
5,658
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 161 S over US 61 is a steel continuous stringer/multi-beam or girder carrying Mo 161 S over US 61 in Pike 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 5,658 vehicles a day, roughly 10% of them trucks, projected to reach 8,770 by 2044. The structure is 310 ft (94.5 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesMo 161 S
CrossesUS 61
LocationS 30 T 53 N R 3 W
RouteState Highway 161
Coordinates39.33388, -91.17843
Functional classRural Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable 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 rating86.3 US tons
Inventory rating51.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length310 ft (94.5 m)
Longest span125 ft (38.1 m)
Deck width41 ft (12.6 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,658 (2024)
Projected traffic8,770 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

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 Mo 161 S over US 61 built?

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

What condition is Mo 161 S over US 61 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 2024.

How much traffic does Mo 161 S over US 61 carry?

About 5,658 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Mo 161 S over US 61?

The structure is 310 ft (94.5 m) long with a longest span of 125 ft (38.1 m) and a deck 41 ft wide.

Who owns Mo 161 S over US 61?

It is owned by the State Highway Agency.