US Bridges

Impala DR over Mussel CR

Poor

Sullivan County, Missouri · S 25 T 61 N R 18 W · Structure no. 22473

Built
1995
30 years old
Condition
Poor
inspected December 2023
Type
Tee Beam
Prestressed Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

Impala DR over Mussel CR is a prestressed concrete continuous tee beam carrying Impala DR over Mussel CR in Sullivan County, Missouri. It was built in 1995, so it is 30 years old, younger 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.

It carries about 30 vehicles a day, roughly 10% of them trucks, projected to reach 33 by 2044. The structure is 120 ft (36.6 m) long and 25 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesImpala DR
CrossesMussel CR
LocationS 25 T 61 N R 18 W
RouteCounty Highway 358
CountySullivan County
StateMissouri
Coordinates40.06086, -92.85644
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.2 US tons
Inventory rating52.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span50 ft (15.2 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic33 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$570,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Impala DR over Mussel CR built?

It was built in 1995, making it 30 years old in 2025.

What condition is Impala DR over Mussel 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 December 2023.

How much traffic does Impala DR over Mussel CR carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Impala DR over Mussel CR?

The structure is 120 ft (36.6 m) long with a longest span of 50 ft (15.2 m) and a deck 25 ft wide.

Who owns Impala DR over Mussel CR?

It is owned by the County Highway Agency.