US Bridges

Rt Mm S over Purina Br

Fair

Franklin County, Missouri · S 6 T 43 N R 2 E · Structure no. 9867

Built
1950
75 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete Continuous
Length
29 ft
3 main spans
Daily traffic
2,879
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Mm S over Purina Br is a concrete continuous culvert carrying Rt Mm S over Purina Br in Franklin County, Missouri. It was built in 1950, so it is 75 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 6 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 2,879 vehicles a day, roughly 5% of them trucks, projected to reach 5,470 by 2044. The structure is 29 ft (8.9 m) long and 28 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesRt Mm S
CrossesPurina Br
LocationS 6 T 43 N R 2 E
RouteState Highway 0MM
CountyFranklin County
StateMissouri
Coordinates38.50144, -90.83882
Functional classRural Major Collector

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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating49.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 10
Structure length29 ft (8.9 m)
Longest span9 ft (2.7 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,879 (2024)
Projected traffic5,470 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$306,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt Mm S over Purina Br built?

It was built in 1950, making it 75 years old in 2025.

What condition is Rt Mm S over Purina 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 December 2023.

How much traffic does Rt Mm S over Purina Br carry?

About 2,879 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Rt Mm S over Purina Br?

The structure is 29 ft (8.9 m) long with a longest span of 9 ft (2.7 m) and a deck 28 ft wide.

Who owns Rt Mm S over Purina Br?

It is owned by the State Highway Agency.