US Bridges

Is 29 S over Cst 14th Ave BNSF RR

FairPosted for load

Clay County, Missouri · S 24 T 50 N R 33 W · Structure no. 6678

Built
1953
72 years old, rebuilt 2009
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,397 ft
8 main spans
Daily traffic
108,151
2024 count
Owner
State
State Highway Agency

About this bridge

Is 29 S over Cst 14th Ave BNSF RR is a steel continuous stringer/multi-beam or girder carrying Is 29 S over Cst 14th Ave BNSF RR in Clay County, Missouri. It was built in 1953 and reconstructed in 2009, so it is 72 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. Its operating status is: posted for load restriction.

It carries about 108,151 vehicles a day, roughly 12% of them trucks, projected to reach 194,672 by 2044. The structure is 1,397 ft (425.8 m) long and 83 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 29 S
CrossesCst 14th Ave BNSF RR
LocationS 24 T 50 N R 33 W
RouteInterstate 29
CountyClay County
StateMissouri
Coordinates39.13253, -94.56806
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.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.7 US tons
Inventory rating23.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8 (+4 approach)
Design loadHS 20
Structure length1,397 ft (425.8 m)
Longest span188 ft (57.3 m)
Deck width83 ft (25.2 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic108,151 (2024)
Projected traffic194,672 by 2044
Trucks12%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 29 S over Cst 14th Ave BNSF RR built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 2009.

What condition is Is 29 S over Cst 14th Ave BNSF RR 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 September 2024.

How much traffic does Is 29 S over Cst 14th Ave BNSF RR carry?

About 108,151 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Is 29 S over Cst 14th Ave BNSF RR?

The structure is 1,397 ft (425.8 m) long with a longest span of 188 ft (57.3 m) and a deck 83 ft wide.

Who owns Is 29 S over Cst 14th Ave BNSF RR?

It is owned by the State Highway Agency.