US Bridges

Benton Way over North Fork Salt Rv

Fair

Adair County, Missouri · S 20 T 63 N R 14 W · Structure no. 16469

Built
1995
30 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
89 ft
3 main spans
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

Benton Way over North Fork Salt Rv is a steel stringer/multi-beam or girder carrying Benton Way over North Fork Salt Rv in Adair County, Missouri. It was built in 1995, so it is 30 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 33 by 2044. The structure is 89 ft (27.1 m) long and 16 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesBenton Way
CrossesNorth Fork Salt Rv
LocationS 20 T 63 N R 14 W
RouteCounty Highway 121
CountyAdair County
StateMissouri
Coordinates40.25828, -92.48294
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45.6 US tons
Inventory rating27.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length89 ft (27.1 m)
Longest span40 ft (12.2 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic33 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$445,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Benton Way over North Fork Salt Rv built?

It was built in 1995, making it 30 years old in 2025.

What condition is Benton Way over North Fork Salt Rv 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 2024.

How much traffic does Benton Way over North Fork Salt Rv carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Benton Way over North Fork Salt Rv?

The structure is 89 ft (27.1 m) long with a longest span of 40 ft (12.2 m) and a deck 16 ft wide.

Who owns Benton Way over North Fork Salt Rv?

It is owned by the County Highway Agency.