US Bridges

Mo 171 S over Spring Br

Fair

Jasper County, Missouri · S 15 T 28 N R 33 W · Structure no. 5986

Built
1955
70 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
18,378
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 171 S over Spring Br is a concrete continuous culvert carrying Mo 171 S over Spring Br in Jasper County, Missouri. It was built in 1955, so it is 70 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 18,378 vehicles a day, roughly 12% of them trucks, projected to reach 28,486 by 2044. The structure is 30 ft (9 m) long. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesMo 171 S
CrossesSpring Br
LocationS 15 T 28 N R 33 W
RouteState Highway 171
CountyJasper County
StateMissouri
Coordinates37.15048, -94.52507
Functional classUrban Other Principal 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
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
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 typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length30 ft (9 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,378 (2024)
Projected traffic28,486 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 171 S over Spring Br built?

It was built in 1955, making it 70 years old in 2025.

What condition is Mo 171 S over Spring Br 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 January 2024.

How much traffic does Mo 171 S over Spring Br carry?

About 18,378 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Mo 171 S over Spring Br?

The structure is 30 ft (9 m) long with a longest span of 10 ft (3 m).

Who owns Mo 171 S over Spring Br?

It is owned by the State Highway Agency.