US Bridges

Mo 34 E over Castor Rvr Ovrfl

Fair

Bollinger County, Missouri · S 30 T 30 N R 8 W · Structure no. 3747

Built
1989
36 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
181 ft
3 main spans
Daily traffic
1,099
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 34 E over Castor Rvr Ovrfl is a prestressed concrete continuous stringer/multi-beam or girder carrying Mo 34 E over Castor Rvr Ovrfl in Bollinger County, Missouri. It was built in 1989, so it is 36 years old, younger 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 1,099 vehicles a day, roughly 7% of them trucks, projected to reach 1,923 by 2044. The structure is 181 ft (55.2 m) long and 35 ft wide. If it were closed, the detour would be 47.8 mi (77 km).

Location

Open in Google Maps
CarriesMo 34 E
CrossesCastor Rvr Ovrfl
LocationS 30 T 30 N R 8 W
RouteState Highway 34
CountyBollinger County
StateMissouri
Coordinates37.24596, -90.20684
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating73.4 US tons
Inventory rating42.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length181 ft (55.2 m)
Longest span60 ft (18.4 m)
Deck width35 ft (10.8 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,099 (2024)
Projected traffic1,923 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.8 mi (77 km)
TollOn a free road
National Highway SystemYes

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 34 E over Castor Rvr Ovrfl built?

It was built in 1989, making it 36 years old in 2025.

What condition is Mo 34 E over Castor Rvr Ovrfl 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 2023.

How much traffic does Mo 34 E over Castor Rvr Ovrfl carry?

About 1,099 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Mo 34 E over Castor Rvr Ovrfl?

The structure is 181 ft (55.2 m) long with a longest span of 60 ft (18.4 m) and a deck 35 ft wide.

Who owns Mo 34 E over Castor Rvr Ovrfl?

It is owned by the State Highway Agency.