US Bridges

Ridgemont DR over County House Br

Good

Boone County, Missouri · S 22 T 48 N R 13 W · Structure no. 37006

Built
2023
2 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
420
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ridgemont DR over County House Br is a steel stringer/multi-beam or girder carrying Ridgemont DR over County House Br in Boone County, Missouri. It was built in 2023, so it is 2 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 8 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: new structure not yet open to traffic.

It carries about 420 vehicles a day, roughly 10% of them trucks, projected to reach 735 by 2043. The structure is 50 ft (15.2 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRidgemont DR
CrossesCounty House Br
LocationS 22 T 48 N R 13 W
RouteCity Street 93
CountyBoone County
StateMissouri
Coordinates38.93708, -92.36914
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusNew structure not yet open to traffic
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.4 US tons
Inventory rating41.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span48 ft (14.5 m)
Deck width35 ft (10.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic420 (2023)
Projected traffic735 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ridgemont DR over County House Br built?

It was built in 2023, making it 2 years old in 2025.

What condition is Ridgemont DR over County House Br 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 Ridgemont DR over County House Br carry?

About 420 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Ridgemont DR over County House Br?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.5 m) and a deck 35 ft wide.

Who owns Ridgemont DR over County House Br?

It is owned by the City or Municipal Highway Agency.