US Bridges

W Red Rock RD over Trib to Perche CR

Fair

Boone County, Missouri · S 28 T 50 N R 13 W · Structure no. 35850

Built
2018
7 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
72 ft
1 main span
Daily traffic
687
2023 count
Owner
County
County Highway Agency

About this bridge

W Red Rock RD over Trib to Perche CR is a steel stringer/multi-beam or girder carrying W Red Rock RD over Trib to Perche CR in Boone County, Missouri. It was built in 2018, so it is 7 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 6 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 687 vehicles a day, roughly 10% of them trucks, projected to reach 1,305 by 2043. The structure is 72 ft (21.9 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesW Red Rock RD
CrossesTrib to Perche CR
LocationS 28 T 50 N R 13 W
RouteCounty Highway 47
CountyBoone County
StateMissouri
Coordinates39.09861, -92.39278
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure9 ExcellentNo problems noted.
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 evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span67 ft (20.4 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic687 (2023)
Projected traffic1,305 by 2043
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W Red Rock RD over Trib to Perche CR built?

It was built in 2018, making it 7 years old in 2025.

What condition is W Red Rock RD over Trib to Perche 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 W Red Rock RD over Trib to Perche CR carry?

About 687 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is W Red Rock RD over Trib to Perche CR?

The structure is 72 ft (21.9 m) long with a longest span of 67 ft (20.4 m) and a deck 28 ft wide.

Who owns W Red Rock RD over Trib to Perche CR?

It is owned by the County Highway Agency.