US Bridges

Brushwood Lake RD over Mill CR

GoodPosted for load

Boone County, Missouri · S 29 T 48 N R 13 W · Structure no. 30605

Built
2003
22 years old
Condition
Good
inspected December 2024
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
25
2023 count
Owner
County
County Highway Agency

About this bridge

Brushwood Lake RD over Mill CR is a concrete slab carrying Brushwood Lake RD over Mill CR in Boone County, Missouri. It was built in 2003, so it is 22 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. Its operating status is: posted for load restriction.

It carries about 25 vehicles a day, roughly 10% of them trucks, projected to reach 48 by 2043. The structure is 28 ft (8.5 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesBrushwood Lake RD
CrossesMill CR
LocationS 29 T 48 N R 13 W
RouteCounty Highway 470
Coordinates38.91318, -92.40322
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.5 US tons
Inventory rating34.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span24 ft (7.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2023)
Projected traffic48 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Brushwood Lake RD over Mill CR built?

It was built in 2003, making it 22 years old in 2025.

What condition is Brushwood Lake RD over Mill 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 December 2024.

How much traffic does Brushwood Lake RD over Mill CR carry?

About 25 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Brushwood Lake RD over Mill CR?

The structure is 28 ft (8.5 m) long with a longest span of 24 ft (7.3 m) and a deck 24 ft wide.

Who owns Brushwood Lake RD over Mill CR?

It is owned by the County Highway Agency.