US Bridges

E 340 ST over Sugar CR

PoorPosted for load

Harrison County, Missouri · S 26 T 63 N R 27 W · Structure no. 24452

Built
1977
48 years old
Condition
Poor
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

E 340 ST over Sugar CR is a steel stringer/multi-beam or girder carrying E 340 ST over Sugar CR in Harrison County, Missouri. It was built in 1977, so it is 48 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 3 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 23 by 2044. The structure is 50 ft (15.2 m) long and 16 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesE 340 ST
CrossesSugar CR
LocationS 26 T 63 N R 27 W
RouteCounty Highway 494
Coordinates40.22074, -93.91362
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionJanuary 2025
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19.8 US tons
Inventory rating12.9 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadH 10
Structure length50 ft (15.2 m)
Longest span50 ft (15.2 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic23 by 2044
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$399,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was E 340 ST over Sugar CR built?

It was built in 1977, making it 48 years old in 2025.

What condition is E 340 ST over Sugar 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 January 2025.

How much traffic does E 340 ST over Sugar CR carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is E 340 ST over Sugar CR?

The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 16 ft wide.

Who owns E 340 ST over Sugar CR?

It is owned by the County Highway Agency.