US Bridges

Mo 6 E over Morgan Br

Fair

DeKalb County, Missouri · S 30 T 59 N R 32 W · Structure no. 4724

Built
1923
102 years old, rebuilt 1959
Condition
Fair
inspected December 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
1,416
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 6 E over Morgan Br is a concrete continuous culvert carrying Mo 6 E over Morgan Br in DeKalb County, Missouri. It was built in 1923 and reconstructed in 1959, so it is 102 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 1,416 vehicles a day, roughly 15% of them trucks, projected to reach 1,912 by 2044. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesMo 6 E
CrossesMorgan Br
LocationS 30 T 59 N R 32 W
RouteState Highway 6
CountyDeKalb County
StateMissouri
Coordinates39.89313, -94.53074
Functional classRural Minor Arterial

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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.3 US tons
Inventory rating51.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,416 (2024)
Projected traffic1,912 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 6 E over Morgan Br built?

It was built in 1923, making it 102 years old in 2025. It was reconstructed in 1959.

What condition is Mo 6 E over Morgan Br 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 Mo 6 E over Morgan Br carry?

About 1,416 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is Mo 6 E over Morgan Br?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Mo 6 E over Morgan Br?

It is owned by the State Highway Agency.