US Bridges

County RD 84 over Mid Fabius Rvr

Good

Knox County, Missouri · S 35 T 63 N R 10 W · Structure no. 30747

Built
2005
20 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
139 ft
3 main spans
Daily traffic
45
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 84 over Mid Fabius Rvr is a prestressed concrete continuous stringer/multi-beam or girder carrying County RD 84 over Mid Fabius Rvr in Knox County, Missouri. It was built in 2005, so it is 20 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 45 vehicles a day, roughly 10% of them trucks, projected to reach 56 by 2044. The structure is 139 ft (42.4 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCounty RD 84
CrossesMid Fabius Rvr
LocationS 35 T 63 N R 10 W
RouteCounty Highway 84
Coordinates40.21811, -91.98022
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.4 US tons
Inventory rating43.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length139 ft (42.4 m)
Longest span51 ft (15.5 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2024)
Projected traffic56 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 County RD 84 over Mid Fabius Rvr built?

It was built in 2005, making it 20 years old in 2025.

What condition is County RD 84 over Mid Fabius Rvr in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does County RD 84 over Mid Fabius Rvr carry?

About 45 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 84 over Mid Fabius Rvr?

The structure is 139 ft (42.4 m) long with a longest span of 51 ft (15.5 m) and a deck 26 ft wide.

Who owns County RD 84 over Mid Fabius Rvr?

It is owned by the County Highway Agency.