US Bridges

Millbrook RD over Millbrook CR

Good

Cole County, Missouri · S 4 T 43 N R 13 W · Structure no. 16914

Built
1991
34 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
39 ft
3 main spans
Daily traffic
75
2024 count
Owner
County
County Highway Agency

About this bridge

Millbrook RD over Millbrook CR is a concrete culvert carrying Millbrook RD over Millbrook CR in Cole County, Missouri. It was built in 1991, so it is 34 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 75 vehicles a day, roughly 10% of them trucks, projected to reach 128 by 2044. The structure is 39 ft (11.9 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesMillbrook RD
CrossesMillbrook CR
LocationS 4 T 43 N R 13 W
RouteCounty Highway 136
Coordinates38.50014, -92.35922
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span12 ft (3.8 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2024)
Projected traffic128 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Millbrook RD over Millbrook CR built?

It was built in 1991, making it 34 years old in 2025.

What condition is Millbrook RD over Millbrook 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 October 2023.

How much traffic does Millbrook RD over Millbrook CR carry?

About 75 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Millbrook RD over Millbrook CR?

The structure is 39 ft (11.9 m) long with a longest span of 12 ft (3.8 m) and a deck 29 ft wide.

Who owns Millbrook RD over Millbrook CR?

It is owned by the County Highway Agency.