US Bridges

Rt M S over Roundtop Br

Fair

Pike County, Missouri · S 15 T 51 N R 4 W · Structure no. 7698

Built
1954
71 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
60
2024 count
Owner
State
State Highway Agency

About this bridge

Rt M S over Roundtop Br is a concrete continuous culvert carrying Rt M S over Roundtop Br in Pike County, Missouri. It was built in 1954, so it is 71 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 5 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 60 vehicles a day, roughly 40% of them trucks, projected to reach 87 by 2044. The structure is 22 ft (6.6 m) long and 23 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesRt M S
CrossesRoundtop Br
LocationS 15 T 51 N R 4 W
RouteState Highway 0M
CountyPike County
StateMissouri
Coordinates39.19798, -91.34964
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating49.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 10
Structure length22 ft (6.6 m)
Longest span9 ft (2.7 m)
Deck width23 ft (7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2024)
Projected traffic87 by 2044
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt M S over Roundtop Br built?

It was built in 1954, making it 71 years old in 2025.

What condition is Rt M S over Roundtop Br 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 November 2024.

How much traffic does Rt M S over Roundtop Br carry?

About 60 vehicles per day (2024 count), of which roughly 40% are trucks.

How long is Rt M S over Roundtop Br?

The structure is 22 ft (6.6 m) long with a longest span of 9 ft (2.7 m) and a deck 23 ft wide.

Who owns Rt M S over Roundtop Br?

It is owned by the State Highway Agency.