US Bridges

Lone Rock Trail over Brushy CR

Good

Gentry County, Missouri · S 4 T 61 N R 30 W · Structure no. 23662

Built
1989
36 years old, rebuilt 2002
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

Lone Rock Trail over Brushy CR is a steel stringer/multi-beam or girder carrying Lone Rock Trail over Brushy CR in Gentry County, Missouri. It was built in 1989 and reconstructed in 2002, 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 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2044. The structure is 28 ft (8.5 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLone Rock Trail
CrossesBrushy CR
LocationS 4 T 61 N R 30 W
RouteCounty Highway 423
Coordinates40.12383, -94.28349
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating83.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length28 ft (8.5 m)
Longest span27 ft (8.2 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic40 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Lone Rock Trail over Brushy CR built?

It was built in 1989, making it 36 years old in 2025. It was reconstructed in 2002.

What condition is Lone Rock Trail over Brushy CR 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 January 2023.

How much traffic does Lone Rock Trail over Brushy CR carry?

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

How long is Lone Rock Trail over Brushy CR?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.2 m) and a deck 18 ft wide.

Who owns Lone Rock Trail over Brushy CR?

It is owned by the County Highway Agency.