US Bridges

Atherton-Sibley over Br of Lit Blue Rvr

Fair

Jackson County, Missouri · S 30 T 51 N R 30 W · Structure no. 13851

Built
1940
85 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
320
2024 count
Owner
County
County Highway Agency

About this bridge

Atherton-Sibley over Br of Lit Blue Rvr is a concrete culvert carrying Atherton-Sibley over Br of Lit Blue Rvr in Jackson County, Missouri. It was built in 1940, so it is 85 years old, older 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 320 vehicles a day, roughly 5% of them trucks, projected to reach 480 by 2044. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesAtherton-Sibley
CrossesBr of Lit Blue Rvr
LocationS 30 T 51 N R 30 W
RouteCounty Highway 49
CountyJackson County
StateMissouri
Coordinates39.19741, -94.25156
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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 rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadOther
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2024)
Projected traffic480 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Atherton-Sibley over Br of Lit Blue Rvr built?

It was built in 1940, making it 85 years old in 2025.

What condition is Atherton-Sibley over Br of Lit Blue Rvr 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 March 2023.

How much traffic does Atherton-Sibley over Br of Lit Blue Rvr carry?

About 320 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Atherton-Sibley over Br of Lit Blue Rvr?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Atherton-Sibley over Br of Lit Blue Rvr?

It is owned by the County Highway Agency.