US Bridges

Mo 171 S over Mine Br

Poor

Jasper County, Missouri · S 17 T 28 N R 32 W · Structure no. 6184

Built
1949
76 years old, rebuilt 1977
Condition
Poor
inspected January 2024
Type
Culvert
Concrete Continuous
Length
35 ft
2 main spans
Daily traffic
18,715
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 171 S over Mine Br is a concrete continuous culvert carrying Mo 171 S over Mine Br in Jasper County, Missouri. It was built in 1949 and reconstructed in 1977, so it is 76 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 18,715 vehicles a day, roughly 17% of them trucks, projected to reach 29,008 by 2044. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesMo 171 S
CrossesMine Br
LocationS 17 T 28 N R 32 W
RouteState Highway 171
Coordinates37.14152, -94.44954
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: 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 rating42.7 US tons
Inventory rating24.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,715 (2024)
Projected traffic29,008 by 2044
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$450,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 171 S over Mine Br built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1977.

What condition is Mo 171 S over Mine Br in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2024.

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

About 18,715 vehicles per day (2024 count), of which roughly 17% are trucks.

How long is Mo 171 S over Mine Br?

The structure is 35 ft (10.7 m) long with a longest span of 12 ft (3.7 m).

Who owns Mo 171 S over Mine Br?

It is owned by the State Highway Agency.