US Bridges

Flagpole RD over Muddy CR

Fair

Mercer County, Missouri · S 6 T 65 N R 23 W · Structure no. 17462

Built
1990
35 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
1 main span
Daily traffic
100
2024 count
Owner
County
County Highway Agency

About this bridge

Flagpole RD over Muddy CR is a steel stringer/multi-beam or girder carrying Flagpole RD over Muddy CR in Mercer County, Missouri. It was built in 1990, so it is 35 years old, younger 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 110 by 2044. The structure is 80 ft (24.4 m) long and 16 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesFlagpole RD
CrossesMuddy CR
LocationS 6 T 65 N R 23 W
RouteCounty Highway 153
CountyMercer County
StateMissouri
Coordinates40.45962, -93.52069
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating44.6 US tons
Inventory rating25.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadOther
Structure length80 ft (24.4 m)
Longest span60 ft (18.2 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic110 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$407,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Flagpole RD over Muddy CR built?

It was built in 1990, making it 35 years old in 2025.

What condition is Flagpole RD over Muddy 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 Flagpole RD over Muddy CR carry?

About 100 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Flagpole RD over Muddy CR?

The structure is 80 ft (24.4 m) long with a longest span of 60 ft (18.2 m) and a deck 16 ft wide.

Who owns Flagpole RD over Muddy CR?

It is owned by the County Highway Agency.