US Bridges

Mo 34 E over Castor Rvr Ovrfl

Fair

Bollinger County, Missouri · S 30 T 30 N R 8 E · Structure no. 4959

Built
1926
99 years old
Condition
Fair
inspected December 2023
Type
Tee Beam
Concrete
Length
67 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 concrete tee beam carrying Mo 34 E over Castor Rvr Ovrfl in Bollinger County, Missouri. It was built in 1926, so it is 99 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 5 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 67 ft (20.4 m) long and 25 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 E
RouteState Highway 34
CountyBollinger County
StateMissouri
Coordinates37.24544, -90.21734
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating41.7 US tons
Inventory rating25.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length67 ft (20.4 m)
Longest span23 ft (6.9 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (6.9 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
CrossesRelief for waterway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$657,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 34 E over Castor Rvr Ovrfl built?

It was built in 1926, making it 99 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 67 ft (20.4 m) long with a longest span of 23 ft (6.9 m) and a deck 25 ft wide.

Who owns Mo 34 E over Castor Rvr Ovrfl?

It is owned by the State Highway Agency.