US Bridges

Rp Missouri Bottom over Mo 370 N&w RR

Poor

St. Louis County, Missouri · S 2039 T 46 N R 5 E · Structure no. 3990

Built
1990
35 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
290 ft
3 main spans
Daily traffic
4,601
2024 count
Owner
State
State Highway Agency

About this bridge

Rp Missouri Bottom over Mo 370 N&w RR is a steel continuous stringer/multi-beam or girder carrying Rp Missouri Bottom over Mo 370 N&w RR 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 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.

It carries about 4,601 vehicles a day, roughly 7% of them trucks, projected to reach 5,751 by 2044. The structure is 290 ft (88.4 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesRp Missouri Bottom
CrossesMo 370 N&w RR
LocationS 2039 T 46 N R 5 E
RouteState Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.77216, -90.40386
Functional classUrban Principal Arterial - Interstate

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length290 ft (88.4 m)
Longest span114 ft (34.7 m)
Deck width41 ft (12.6 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,601 (2024)
Projected traffic5,751 by 2044
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed5 mi (8 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 Rp Missouri Bottom over Mo 370 N&w RR built?

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

What condition is Rp Missouri Bottom over Mo 370 N&w 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 August 2024.

How much traffic does Rp Missouri Bottom over Mo 370 N&w RR carry?

About 4,601 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Rp Missouri Bottom over Mo 370 N&w RR?

The structure is 290 ft (88.4 m) long with a longest span of 114 ft (34.7 m) and a deck 41 ft wide.

Who owns Rp Missouri Bottom over Mo 370 N&w RR?

It is owned by the State Highway Agency.