US Bridges

Rt T S over Marks CR

Fair

Lafayette County, Missouri · S 20 T 49 N R 25 W · Structure no. 173

Built
1957
68 years old, rebuilt 1984
Condition
Fair
inspected January 2023
Type
Slab
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
487
2024 count
Owner
State
State Highway Agency

About this bridge

Rt T S over Marks CR is a concrete continuous slab carrying Rt T S over Marks CR in Lafayette County, Missouri. It was built in 1957 and reconstructed in 1984, so it is 68 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 487 vehicles a day, roughly 7% of them trucks, projected to reach 706 by 2044. The structure is 102 ft (31.1 m) long and 30 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesRt T S
CrossesMarks CR
LocationS 20 T 49 N R 25 W
RouteState Highway 0T
CountyLafayette County
StateMissouri
Coordinates39.02814, -93.69152
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length102 ft (31.1 m)
Longest span34 ft (10.4 m)
Deck width30 ft (9 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic487 (2024)
Projected traffic706 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 T S over Marks CR built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1984.

What condition is Rt T S over Marks 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 January 2023.

How much traffic does Rt T S over Marks CR carry?

About 487 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Rt T S over Marks CR?

The structure is 102 ft (31.1 m) long with a longest span of 34 ft (10.4 m) and a deck 30 ft wide.

Who owns Rt T S over Marks CR?

It is owned by the State Highway Agency.