US Bridges

Chapel Hill RD over County House CR

Fair

Boone County, Missouri · S 22 T 48 N R 13 W · Structure no. 15430

Built
1984
41 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
72 ft
2 main spans
Daily traffic
1,200
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Chapel Hill RD over County House CR is a prestressed concrete box beam or girders - multiple carrying Chapel Hill RD over County House CR in Boone County, Missouri. It was built in 1984, so it is 41 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 1,200 vehicles a day, roughly 10% of them trucks, projected to reach 2,100 by 2043. The structure is 72 ft (21.9 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesChapel Hill RD
CrossesCounty House CR
LocationS 22 T 48 N R 13 W
RouteCounty Highway 0
CountyBoone County
StateMissouri
Coordinates38.9328, -92.37668
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span35 ft (10.7 m)
Deck width35 ft (10.8 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2023)
Projected traffic2,100 by 2043
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Chapel Hill RD over County House CR built?

It was built in 1984, making it 41 years old in 2025.

What condition is Chapel Hill RD over County House CR 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 Chapel Hill RD over County House CR carry?

About 1,200 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Chapel Hill RD over County House CR?

The structure is 72 ft (21.9 m) long with a longest span of 35 ft (10.7 m) and a deck 35 ft wide.

Who owns Chapel Hill RD over County House CR?

It is owned by the City or Municipal Highway Agency.