US Bridges

Rt Mm S over Grassy CR

Fair

Bollinger County, Missouri · S 19 T 30 N R 8 E · Structure no. 2447

Built
1972
53 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
124 ft
3 main spans
Daily traffic
67
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Mm S over Grassy CR is a steel continuous stringer/multi-beam or girder carrying Rt Mm S over Grassy CR in Bollinger County, Missouri. It was built in 1972, so it is 53 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 67 vehicles a day, roughly 9% of them trucks, projected to reach 101 by 2044. The structure is 124 ft (37.8 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesRt Mm S
CrossesGrassy CR
LocationS 19 T 30 N R 8 E
RouteState Highway 0MM
Coordinates37.25032, -90.20265
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.7 US tons
Inventory rating23.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length124 ft (37.8 m)
Longest span48 ft (14.6 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic67 (2024)
Projected traffic101 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Mm S over Grassy CR built?

It was built in 1972, making it 53 years old in 2025.

What condition is Rt Mm S over Grassy CR 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 December 2023.

How much traffic does Rt Mm S over Grassy CR carry?

About 67 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Rt Mm S over Grassy CR?

The structure is 124 ft (37.8 m) long with a longest span of 48 ft (14.6 m) and a deck 31 ft wide.

Who owns Rt Mm S over Grassy CR?

It is owned by the State Highway Agency.