US Bridges

Is 49 N over Lit Blue Rvr

Fair

Jackson County, Missouri · S 36 T 47 N R 33 W · Structure no. 6329

Built
1954
71 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
86 ft
3 main spans
Daily traffic
44,166
2024 count
Owner
State
State Highway Agency

About this bridge

Is 49 N over Lit Blue Rvr is a concrete continuous slab carrying Is 49 N over Lit Blue Rvr in Jackson County, Missouri. It was built in 1954, so it is 71 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 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 44,166 vehicles a day, roughly 17% of them trucks, projected to reach 59,624 by 2044. The structure is 86 ft (26.2 m) long and 65 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 49 N
CrossesLit Blue Rvr
LocationS 36 T 47 N R 33 W
RouteInterstate 49
CountyJackson County
StateMissouri
Coordinates38.85288, -94.52861
Functional classUrban Principal Arterial - Interstate

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.3 US tons
Inventory rating49.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length86 ft (26.2 m)
Longest span30 ft (9.2 m)
Deck width65 ft (19.9 m)
Roadway width62 ft (19 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,166 (2024)
Projected traffic59,624 by 2044
Trucks17%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Is 49 N over Lit Blue Rvr built?

It was built in 1954, making it 71 years old in 2025.

What condition is Is 49 N over 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 October 2023.

How much traffic does Is 49 N over Lit Blue Rvr carry?

About 44,166 vehicles per day (2024 count), of which roughly 17% are trucks.

How long is Is 49 N over Lit Blue Rvr?

The structure is 86 ft (26.2 m) long with a longest span of 30 ft (9.2 m) and a deck 65 ft wide.

Who owns Is 49 N over Lit Blue Rvr?

It is owned by the State Highway Agency.