US Bridges

US 71 N over Cst E 12th ST

Fair

Jackson County, Missouri · S 5 T 49 N R 33 W · Structure no. 216

Built
1960
65 years old, rebuilt 1984
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
164 ft
3 main spans
Daily traffic
41,474
2024 count
Owner
State
State Highway Agency

About this bridge

US 71 N over Cst E 12th ST is a concrete continuous box beam or girders - single or spread carrying US 71 N over Cst E 12th ST in Jackson County, Missouri. It was built in 1960 and reconstructed in 1984, so it is 65 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 41,474 vehicles a day, roughly 6% of them trucks, projected to reach 55,990 by 2044. The structure is 164 ft (50 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 71 N
CrossesCst E 12th ST
LocationS 5 T 49 N R 33 W
RouteU.S. Route 71
CountyJackson County
StateMissouri
Coordinates39.09953, -94.57212
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.4 US tons
Inventory rating45.6 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length164 ft (50 m)
Longest span67 ft (20.4 m)
Deck width40 ft (12.1 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,474 (2024)
Projected traffic55,990 by 2044
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 71 N over Cst E 12th ST built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1984.

What condition is US 71 N over Cst E 12th ST 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 2023.

How much traffic does US 71 N over Cst E 12th ST carry?

About 41,474 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is US 71 N over Cst E 12th ST?

The structure is 164 ft (50 m) long with a longest span of 67 ft (20.4 m) and a deck 40 ft wide.

Who owns US 71 N over Cst E 12th ST?

It is owned by the State Highway Agency.