US Bridges

Flint Ave over Mason CR

PoorPosted for load

Daviess County, Missouri · S 26 T 61 N R 27 W · Structure no. 23145

Built
1981
44 years old, rebuilt 2010
Condition
Poor
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
58 ft
3 main spans
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

Flint Ave over Mason CR is a steel stringer/multi-beam or girder carrying Flint Ave over Mason CR in Daviess County, Missouri. It was built in 1981 and reconstructed in 2010, so it is 44 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, roughly 10% of them trucks, projected to reach 23 by 2044. The structure is 58 ft (17.7 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFlint Ave
CrossesMason CR
LocationS 26 T 61 N R 27 W
RouteCounty Highway 392
CountyDaviess County
StateMissouri
Coordinates40.06001, -93.90346
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating20.8 US tons
Inventory rating12.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans3
Design loadOther
Structure length58 ft (17.7 m)
Longest span32 ft (9.8 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic23 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$455,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Flint Ave over Mason CR built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 2010.

What condition is Flint Ave over Mason CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does Flint Ave over Mason CR carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Flint Ave over Mason CR?

The structure is 58 ft (17.7 m) long with a longest span of 32 ft (9.8 m) and a deck 16 ft wide.

Who owns Flint Ave over Mason CR?

It is owned by the County Highway Agency.