US Bridges

Stillhouse RD over Br of Sni-A-Bar CR

Fair

Jackson County, Missouri · S 19 T 48 N R 29 W · Structure no. 20795

Built
1991
34 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
162
2024 count
Owner
County
County Highway Agency

About this bridge

Stillhouse RD over Br of Sni-A-Bar CR is a prestressed concrete stringer/multi-beam or girder carrying Stillhouse RD over Br of Sni-A-Bar CR in Jackson 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 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 162 vehicles a day, roughly 10% of them trucks, projected to reach 243 by 2044. The structure is 40 ft (12.2 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesStillhouse RD
CrossesBr of Sni-A-Bar CR
LocationS 19 T 48 N R 29 W
RouteCounty Highway 275
CountyJackson County
StateMissouri
Coordinates38.95146, -94.16266
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic162 (2024)
Projected traffic243 by 2044
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 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 Stillhouse RD over Br of Sni-A-Bar CR built?

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

What condition is Stillhouse RD over Br of Sni-A-Bar 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 February 2023.

How much traffic does Stillhouse RD over Br of Sni-A-Bar CR carry?

About 162 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Stillhouse RD over Br of Sni-A-Bar CR?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 38 ft wide.

Who owns Stillhouse RD over Br of Sni-A-Bar CR?

It is owned by the County Highway Agency.