US Bridges

Fourth ST over Trib of Red Oak CR

Fair

Gasconade County, Missouri · S 32 T 42 N R 5 W · Structure no. 16743

Built
1968
57 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
1,500
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Fourth ST over Trib of Red Oak CR is a concrete continuous culvert carrying Fourth ST over Trib of Red Oak CR in Gasconade County, Missouri. It was built in 1968, so it is 57 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 6 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 1,500 vehicles a day, roughly 10% of them trucks, projected to reach 1,800 by 2044. The structure is 29 ft (8.8 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFourth ST
CrossesTrib of Red Oak CR
LocationS 32 T 42 N R 5 W
RouteCity Street 131
Coordinates38.33511, -91.50411
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length29 ft (8.8 m)
Longest span13 ft (4 m)
Deck width23 ft (7.1 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2024)
Projected traffic1,800 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$153,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Fourth ST over Trib of Red Oak CR built?

It was built in 1968, making it 57 years old in 2025.

What condition is Fourth ST over Trib of Red 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 March 2024.

How much traffic does Fourth ST over Trib of Red Oak CR carry?

About 1,500 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Fourth ST over Trib of Red Oak CR?

The structure is 29 ft (8.8 m) long with a longest span of 13 ft (4 m) and a deck 23 ft wide.

Who owns Fourth ST over Trib of Red Oak CR?

It is owned by the City or Municipal Highway Agency.