US Bridges

Bobcat ST over Little Medicine CR

FairPosted for load

Mercer County, Missouri · S 19 T 66 N R 22 W · Structure no. 15981

Built
1900
125 years old, rebuilt 1960
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
29 ft
1 main span
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

Bobcat ST over Little Medicine CR is a steel stringer/multi-beam or girder carrying Bobcat ST over Little Medicine CR in Mercer County, Missouri. It was built in 1900 and reconstructed in 1960, so it is 125 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. Its operating status is: posted for load restriction.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2044. The structure is 29 ft (8.8 m) long and 14 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesBobcat ST
CrossesLittle Medicine CR
LocationS 19 T 66 N R 22 W
RouteCounty Highway 105
CountyMercer County
StateMissouri
Coordinates40.5122, -93.42074
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating8.9 US tons
Inventory rating6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadOther
Structure length29 ft (8.8 m)
Longest span27 ft (8.2 m)
Deck width14 ft (4.2 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic39 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$272,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Bobcat ST over Little Medicine CR built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1960.

What condition is Bobcat ST over Little Medicine 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 Bobcat ST over Little Medicine CR carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Bobcat ST over Little Medicine CR?

The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.2 m) and a deck 14 ft wide.

Who owns Bobcat ST over Little Medicine CR?

It is owned by the County Highway Agency.