US Bridges

Mo 141 S over Mo 100 Rp MO141S to MO1

Fair

St. Louis County, Missouri · S 31 T 45 N R 4 E · Structure no. 4410

Built
1997
28 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
377 ft
3 main spans
Daily traffic
38,073
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 141 S over Mo 100 Rp MO141S to MO1 is a steel continuous stringer/multi-beam or girder carrying Mo 141 S over Mo 100 Rp MO141S to MO1 in St. Louis County, Missouri. It was built in 1997, so it is 28 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 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 38,073 vehicles a day, roughly 6% of them trucks, projected to reach 47,591 by 2044. The structure is 377 ft (114.9 m) long and 89 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesMo 141 S
CrossesMo 100 Rp MO141S to MO1
LocationS 31 T 45 N R 4 E
RouteState Highway 141
CountySt. Louis County
StateMissouri
Coordinates38.59278, -90.50871
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 rating92.3 US tons
Inventory rating55.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length377 ft (114.9 m)
Longest span197 ft (60 m)
Deck width89 ft (27.2 m)
Roadway width87 ft (26.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,073 (2024)
Projected traffic47,591 by 2044
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 141 S over Mo 100 Rp MO141S to MO1 built?

It was built in 1997, making it 28 years old in 2025.

What condition is Mo 141 S over Mo 100 Rp MO141S to MO1 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 June 2024.

How much traffic does Mo 141 S over Mo 100 Rp MO141S to MO1 carry?

About 38,073 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Mo 141 S over Mo 100 Rp MO141S to MO1?

The structure is 377 ft (114.9 m) long with a longest span of 197 ft (60 m) and a deck 89 ft wide.

Who owns Mo 141 S over Mo 100 Rp MO141S to MO1?

It is owned by the State Highway Agency.