US Bridges

Mo 370 E over Cst Ferguson LN

Fair

St. Louis County, Missouri · S 2038 T 47 N R 5 E · Structure no. 3987

Built
1990
35 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
182 ft
3 main spans
Daily traffic
22,904
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 370 E over Cst Ferguson LN is a prestressed concrete continuous stringer/multi-beam or girder carrying Mo 370 E over Cst Ferguson LN in St. Louis County, Missouri. It was built in 1990, so it is 35 years old, younger 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 22,904 vehicles a day, roughly 5% of them trucks, projected to reach 28,630 by 2044. The structure is 182 ft (55.5 m) long and 58 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesMo 370 E
CrossesCst Ferguson LN
LocationS 2038 T 47 N R 5 E
RouteState Highway 370
Coordinates38.79155, -90.44364
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.4 US tons
Inventory rating45.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length182 ft (55.5 m)
Longest span72 ft (21.9 m)
Deck width58 ft (17.6 m)
Roadway width55 ft (16.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,904 (2024)
Projected traffic28,630 by 2044
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mo 370 E over Cst Ferguson LN built?

It was built in 1990, making it 35 years old in 2025.

What condition is Mo 370 E over Cst Ferguson LN 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 August 2024.

How much traffic does Mo 370 E over Cst Ferguson LN carry?

About 22,904 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Mo 370 E over Cst Ferguson LN?

The structure is 182 ft (55.5 m) long with a longest span of 72 ft (21.9 m) and a deck 58 ft wide.

Who owns Mo 370 E over Cst Ferguson LN?

It is owned by the State Highway Agency.