US Bridges

County RD 086 over N Fabius Rvr

Fair

Knox County, Missouri · S 11 T 63 N R 10 W · Structure no. 15142

Built
1986
39 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
259 ft
4 main spans
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 086 over N Fabius Rvr is a prestressed concrete continuous stringer/multi-beam or girder carrying County RD 086 over N Fabius Rvr in Knox County, Missouri. It was built in 1986, so it is 39 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 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 44 by 2044. The structure is 259 ft (78.9 m) long and 27 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesCounty RD 086
CrossesN Fabius Rvr
LocationS 11 T 63 N R 10 W
RouteCounty Highway 86
Coordinates40.28661, -91.97786
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
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 inspectionAugust 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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans4
Design loadHS 20 + Mod
Structure length259 ft (78.9 m)
Longest span90 ft (27.4 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic44 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 086 over N Fabius Rvr built?

It was built in 1986, making it 39 years old in 2025.

What condition is County RD 086 over N Fabius Rvr 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 August 2023.

How much traffic does County RD 086 over N Fabius Rvr carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 086 over N Fabius Rvr?

The structure is 259 ft (78.9 m) long with a longest span of 90 ft (27.4 m) and a deck 27 ft wide.

Who owns County RD 086 over N Fabius Rvr?

It is owned by the County Highway Agency.