US Bridges

US 71 N over Cst Prospect Ave

Good

Jackson County, Missouri · S 28 T 49 N R 33 W · Structure no. 11877

Built
1995
30 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
194 ft
2 main spans
Daily traffic
43,460
2024 count
Owner
State
State Highway Agency

About this bridge

US 71 N over Cst Prospect Ave is a steel stringer/multi-beam or girder carrying US 71 N over Cst Prospect Ave in Jackson County, Missouri. It was built in 1995, so it is 30 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 43,460 vehicles a day, roughly 6% of them trucks, projected to reach 58,671 by 2044. The structure is 194 ft (59.1 m) long and 68 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 71 N
CrossesCst Prospect Ave
LocationS 28 T 49 N R 33 W
RouteU.S. Route 71
Coordinates39.03686, -94.55457
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure9 ExcellentNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating66.5 US tons
Inventory rating39.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length194 ft (59.1 m)
Longest span134 ft (40.8 m)
Deck width68 ft (20.6 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43,460 (2024)
Projected traffic58,671 by 2044
Trucks6%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 71 N over Cst Prospect Ave built?

It was built in 1995, making it 30 years old in 2025.

What condition is US 71 N over Cst Prospect Ave in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does US 71 N over Cst Prospect Ave carry?

About 43,460 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is US 71 N over Cst Prospect Ave?

The structure is 194 ft (59.1 m) long with a longest span of 134 ft (40.8 m) and a deck 68 ft wide.

Who owns US 71 N over Cst Prospect Ave?

It is owned by the State Highway Agency.