US Bridges

Southfork RD over S Fork

PoorPosted for load

Pettis County, Missouri · S 26 T 48 N R 23 W · Structure no. 13899

Built
1964
61 years old, rebuilt 1989
Condition
Poor
inspected February 2024
Type
Girder and Floorbeam System
Steel
Length
81 ft
1 main span
Daily traffic
168
2024 count
Owner
County
County Highway Agency

About this bridge

Southfork RD over S Fork is a steel girder and floorbeam system carrying Southfork RD over S Fork in Pettis County, Missouri. It was built in 1964 and reconstructed in 1989, so it is 61 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. Its operating status is: posted for load restriction.

It carries about 168 vehicles a day, roughly 10% of them trucks, projected to reach 286 by 2044. The structure is 81 ft (24.7 m) long and 20 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesSouthfork RD
CrossesS Fork
LocationS 26 T 48 N R 23 W
RouteCounty Highway 51
Coordinates38.91558, -93.42098
Functional classRural Minor Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating11.9 US tons
Inventory rating6.9 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadOther
Structure length81 ft (24.7 m)
Longest span75 ft (22.9 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic168 (2024)
Projected traffic286 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$745,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Southfork RD over S Fork built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1989.

What condition is Southfork RD over S Fork 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 Southfork RD over S Fork carry?

About 168 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Southfork RD over S Fork?

The structure is 81 ft (24.7 m) long with a longest span of 75 ft (22.9 m) and a deck 20 ft wide.

Who owns Southfork RD over S Fork?

It is owned by the County Highway Agency.