US Bridges

Bu 71 S over Elk Rvr

Fair

McDonald County, Missouri · S 34 T 22 N R 32 W · Structure no. 1160

Built
1965
60 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
522 ft
3 main spans
Daily traffic
3,427
2024 count
Owner
State
State Highway Agency

About this bridge

Bu 71 S over Elk Rvr is a steel continuous stringer/multi-beam or girder carrying Bu 71 S over Elk Rvr in McDonald County, Missouri. It was built in 1965, so it is 60 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 3,427 vehicles a day, roughly 6% of them trucks, projected to reach 7,197 by 2044. The structure is 522 ft (159.1 m) long and 33 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

CarriesBu 71 S
CrossesElk Rvr
LocationS 34 T 22 N R 32 W
RouteState Highway 71
Coordinates36.58874, -94.38767
Functional classRural Minor Arterial

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.6 US tons
Inventory rating28.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadH 20
Structure length522 ft (159.1 m)
Longest span160 ft (48.8 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,427 (2024)
Projected traffic7,197 by 2044
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 km)
TollOn a free road
National Highway SystemNo

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 Bu 71 S over Elk Rvr built?

It was built in 1965, making it 60 years old in 2025.

What condition is Bu 71 S over Elk 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 February 2024.

How much traffic does Bu 71 S over Elk Rvr carry?

About 3,427 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Bu 71 S over Elk Rvr?

The structure is 522 ft (159.1 m) long with a longest span of 160 ft (48.8 m) and a deck 33 ft wide.

Who owns Bu 71 S over Elk Rvr?

It is owned by the State Highway Agency.