US Bridges

County RD #504 over Barnes CR

Poor

Madison County, Missouri · S 4 T 33 N R 6 E · Structure no. 16125

Built
1922
103 years old
Condition
Poor
inspected December 2023
Type
Truss - Thru
Steel
Length
48 ft
1 main span
Daily traffic
50
2024 count
Owner
County
County Highway Agency

About this bridge

County RD #504 over Barnes CR is a steel truss - thru carrying County RD #504 over Barnes CR in Madison County, Missouri. It was built in 1922, so it is 103 years old, older 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.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 65 by 2044. The structure is 48 ft (14.6 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty RD #504
CrossesBarnes CR
LocationS 4 T 33 N R 6 E
RouteCounty Highway 111
CountyMadison County
StateMissouri
Coordinates37.57247, -90.38371
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating25.8 US tons
Inventory rating15.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length48 ft (14.6 m)
Longest span48 ft (14.6 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic65 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$383,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD #504 over Barnes CR built?

It was built in 1922, making it 103 years old in 2025.

What condition is County RD #504 over Barnes 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 December 2023.

How much traffic does County RD #504 over Barnes CR carry?

About 50 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD #504 over Barnes CR?

The structure is 48 ft (14.6 m) long with a longest span of 48 ft (14.6 m) and a deck 21 ft wide.

Who owns County RD #504 over Barnes CR?

It is owned by the County Highway Agency.