US Bridges

Mo 231 S over Martigney CR

Fair

St. Louis County, Missouri · S 3317 T 43 N R 6 E · Structure no. 3244

Built
1900
125 years old, rebuilt 1981
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
30 ft
3 main spans
Daily traffic
40,970
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 231 S over Martigney CR is a concrete continuous culvert carrying Mo 231 S over Martigney CR in St. Louis County, Missouri. It was built in 1900 and reconstructed in 1981, so it is 125 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 40,970 vehicles a day, roughly 5% of them trucks, projected to reach 57,358 by 2044. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesMo 231 S
CrossesMartigney CR
LocationS 3317 T 43 N R 6 E
RouteState Highway 231
CountySt. Louis County
StateMissouri
Coordinates38.48712, -90.30417
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 inspectionNovember 2023
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 rating26.8 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span10 ft (3.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40,970 (2024)
Projected traffic57,358 by 2044
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 231 S over Martigney CR built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1981.

What condition is Mo 231 S over Martigney CR 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 November 2023.

How much traffic does Mo 231 S over Martigney CR carry?

About 40,970 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Mo 231 S over Martigney CR?

The structure is 30 ft (9.1 m) long with a longest span of 10 ft (3.1 m).

Who owns Mo 231 S over Martigney CR?

It is owned by the State Highway Agency.