US Bridges

Rp IS270W to IS70E over Mo 180

Fair

St. Louis County, Missouri · S 131 T 46 N R 5 E · Structure no. 3117

Built
1982
43 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
180 ft
3 main spans
Daily traffic
5,576
2024 count
Owner
State
State Highway Agency

About this bridge

Rp IS270W to IS70E over Mo 180 is a prestressed concrete continuous stringer/multi-beam or girder carrying Rp IS270W to IS70E over Mo 180 in St. Louis County, Missouri. It was built in 1982, so it is 43 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 5,576 vehicles a day, roughly 10% of them trucks, projected to reach 6,970 by 2044. The structure is 180 ft (54.9 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesRp IS270W to IS70E
CrossesMo 180
LocationS 131 T 46 N R 5 E
RouteState Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.75797, -90.43365
Functional classUrban Principal Arterial - Interstate

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.3 US tons
Inventory rating41.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length180 ft (54.9 m)
Longest span88 ft (26.8 m)
Deck width30 ft (9 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,576 (2024)
Projected traffic6,970 by 2044
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rp IS270W to IS70E over Mo 180 built?

It was built in 1982, making it 43 years old in 2025.

What condition is Rp IS270W to IS70E over Mo 180 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 Rp IS270W to IS70E over Mo 180 carry?

About 5,576 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Rp IS270W to IS70E over Mo 180?

The structure is 180 ft (54.9 m) long with a longest span of 88 ft (26.8 m) and a deck 30 ft wide.

Who owns Rp IS270W to IS70E over Mo 180?

It is owned by the State Highway Agency.