US Bridges

Colburn RD over Br of Sni-A-Bar CR

FairPosted for load

Jackson County, Missouri · S 30 T 48 N R 29 W · Structure no. 20651

Built
1987
38 years old
Condition
Fair
inspected February 2023
Type
Tee Beam
Prestressed Concrete
Length
153 ft
3 main spans
Daily traffic
1,230
2024 count
Owner
County
County Highway Agency

About this bridge

Colburn RD over Br of Sni-A-Bar CR is a prestressed concrete tee beam carrying Colburn RD over Br of Sni-A-Bar CR in Jackson County, Missouri. It was built in 1987, so it is 38 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. Its operating status is: posted for load restriction.

It carries about 1,230 vehicles a day, roughly 5% of them trucks, projected to reach 1,845 by 2044. The structure is 153 ft (46.6 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesColburn RD
CrossesBr of Sni-A-Bar CR
LocationS 30 T 48 N R 29 W
RouteCounty Highway 268
CountyJackson County
StateMissouri
Coordinates38.94088, -94.16869
Functional classRural Minor Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length153 ft (46.6 m)
Longest span60 ft (18.3 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,230 (2024)
Projected traffic1,845 by 2044
Trucks5%
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 Colburn RD over Br of Sni-A-Bar CR built?

It was built in 1987, making it 38 years old in 2025.

What condition is Colburn 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 Colburn RD over Br of Sni-A-Bar CR carry?

About 1,230 vehicles per day (2024 count), of which roughly 5% are trucks.

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

The structure is 153 ft (46.6 m) long with a longest span of 60 ft (18.3 m) and a deck 30 ft wide.

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

It is owned by the County Highway Agency.