US Bridges

Koch RD S over Martigney CR

Fair

St. Louis County, Missouri · S 3119 T 43 N R 7 E · Structure no. 2238

Built
1976
49 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
44 ft
3 main spans
Daily traffic
4,433
2024 count
Owner
State
State Highway Agency

About this bridge

Koch RD S over Martigney CR is a concrete continuous culvert carrying Koch RD S over Martigney CR in St. Louis County, Missouri. It was built in 1976, so it is 49 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 4,433 vehicles a day, roughly 5% of them trucks, projected to reach 6,650 by 2044. The structure is 44 ft (13.5 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesKoch RD S
CrossesMartigney CR
LocationS 3119 T 43 N R 7 E
RouteCounty Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.4872, -90.28386
Functional classUrban 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.2 US tons
Inventory rating57.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length44 ft (13.5 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 traffic4,433 (2024)
Projected traffic6,650 by 2044
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Koch RD S over Martigney CR built?

It was built in 1976, making it 49 years old in 2025.

What condition is Koch RD 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 Koch RD S over Martigney CR carry?

About 4,433 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Koch RD S over Martigney CR?

The structure is 44 ft (13.5 m) long with a longest span of 12 ft (3.7 m).

Who owns Koch RD S over Martigney CR?

It is owned by the State Highway Agency.