US Bridges

Rt M S over Is 70

Poor

Cooper County, Missouri · S 8 T 48 N R 18 W · Structure no. 630

Built
1961
64 years old
Condition
Poor
inspected July 2023
Type
Slab
Concrete Continuous
Length
207 ft
4 main spans
Daily traffic
313
2024 count
Owner
State
State Highway Agency

About this bridge

Rt M S over Is 70 is a concrete continuous slab carrying Rt M S over Is 70 in Cooper County, Missouri. It was built in 1961, so it is 64 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 313 vehicles a day, roughly 10% of them trucks, projected to reach 423 by 2044. The structure is 207 ft (63.1 m) long and 22 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesRt M S
CrossesIs 70
LocationS 8 T 48 N R 18 W
RouteState Highway 0M
CountyCooper County
StateMissouri
Coordinates38.93456, -92.91464
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.7 US tons
Inventory rating19.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length207 ft (63.1 m)
Longest span56 ft (17.1 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic313 (2024)
Projected traffic423 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed14.3 mi (23 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rt M S over Is 70 built?

It was built in 1961, making it 64 years old in 2025.

What condition is Rt M S over Is 70 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does Rt M S over Is 70 carry?

About 313 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Rt M S over Is 70?

The structure is 207 ft (63.1 m) long with a longest span of 56 ft (17.1 m) and a deck 22 ft wide.

Who owns Rt M S over Is 70?

It is owned by the State Highway Agency.