US Bridges

High ST over Mna RR

PoorPosted for load

Jasper County, Missouri · S 33 T 29 N R 31 W · Structure no. 14659

Built
1930
95 years old
Condition
Poor
inspected February 2025
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
152 ft
9 main spans
Daily traffic
500
2023 count
Owner
Railroad
Railroad

About this bridge

High ST over Mna RR is a wood or timber stringer/multi-beam or girder carrying High ST over Mna RR in Jasper County, Missouri. It was built in 1930, so it is 95 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. Its operating status is: posted for load restriction.

It carries about 500 vehicles a day, roughly 10% of them trucks, projected to reach 750 by 2043. The structure is 152 ft (46.3 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesHigh ST
CrossesMna RR
LocationS 33 T 29 N R 31 W
RouteCity Street 0
CountyJasper County
StateMissouri
Coordinates37.18508, -94.31659
Functional classUrban Collector

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating16.9 US tons
Inventory rating8.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans9
Design loadOther
Structure length152 ft (46.3 m)
Longest span21 ft (6.4 m)
Deck width27 ft (8.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic750 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerRailroad
Maintained byRailroad
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was High ST over Mna RR built?

It was built in 1930, making it 95 years old in 2025.

What condition is High ST over Mna RR 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 February 2025.

How much traffic does High ST over Mna RR carry?

About 500 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is High ST over Mna RR?

The structure is 152 ft (46.3 m) long with a longest span of 21 ft (6.4 m) and a deck 27 ft wide.

Who owns High ST over Mna RR?

It is owned by the Railroad.