US Bridges

Brush RD over Smokey Br

Fair

Linn County, Missouri · S 25 T 59 N R 22 W · Structure no. 20673

Built
1989
36 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

Brush RD over Smokey Br is a concrete culvert carrying Brush RD over Smokey Br in Linn County, Missouri. It was built in 1989, 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 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 22 by 2044. The structure is 25 ft (7.6 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesBrush RD
CrossesSmokey Br
LocationS 25 T 59 N R 22 W
RouteCounty Highway 270
CountyLinn County
StateMissouri
Coordinates39.90105, -93.32062
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span11 ft (3.4 m)
Deck width31 ft (9.3 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic22 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Brush RD over Smokey Br built?

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

What condition is Brush RD over Smokey Br 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 2024.

How much traffic does Brush RD over Smokey Br carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Brush RD over Smokey Br?

The structure is 25 ft (7.6 m) long with a longest span of 11 ft (3.4 m) and a deck 31 ft wide.

Who owns Brush RD over Smokey Br?

It is owned by the County Highway Agency.