US Bridges

CO RD SW 400 over E Pin Oak CR

FairPosted for load

Johnson County, Missouri · S 10 T 45 N R 28 W · Structure no. 21985

Built
1900
125 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
81
2023 count
Owner
County
County Highway Agency

About this bridge

CO RD SW 400 over E Pin Oak CR is a steel stringer/multi-beam or girder carrying CO RD SW 400 over E Pin Oak CR in Johnson County, Missouri. It was built in 1900, 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 81 vehicles a day, roughly 10% of them trucks, projected to reach 130 by 2043. The structure is 28 ft (8.5 m) long and 23 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCO RD SW 400
CrossesE Pin Oak CR
LocationS 10 T 45 N R 28 W
RouteCounty Highway 333
Coordinates38.71099, -94.0049
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.8 US tons
Inventory rating14.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width23 ft (6.9 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic81 (2023)
Projected traffic130 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$185,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD SW 400 over E Pin Oak CR built?

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

What condition is CO RD SW 400 over E Pin Oak 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 2024.

How much traffic does CO RD SW 400 over E Pin Oak CR carry?

About 81 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is CO RD SW 400 over E Pin Oak CR?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 23 ft wide.

Who owns CO RD SW 400 over E Pin Oak CR?

It is owned by the County Highway Agency.