US Bridges

Old RTE 60 over Br of Birch CR

Fair

Shannon County, Missouri · S 21 T 27 N R 5 W · Structure no. 21358

Built
1929
96 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

Old RTE 60 over Br of Birch CR is a concrete continuous culvert carrying Old RTE 60 over Br of Birch CR in Shannon County, Missouri. It was built in 1929, so it is 96 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 60 by 2043. The structure is 23 ft (7 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesOld RTE 60
CrossesBr of Birch CR
LocationS 21 T 27 N R 5 W
RouteCounty Highway 302
CountyShannon County
StateMissouri
Coordinates36.99, -91.5102
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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadOther
Structure length23 ft (7 m)
Longest span11 ft (3.4 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic60 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Old RTE 60 over Br of Birch CR built?

It was built in 1929, making it 96 years old in 2025.

What condition is Old RTE 60 over Br of Birch 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 January 2025.

How much traffic does Old RTE 60 over Br of Birch CR carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Old RTE 60 over Br of Birch CR?

The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m) and a deck 34 ft wide.

Who owns Old RTE 60 over Br of Birch CR?

It is owned by the County Highway Agency.