US Bridges

Is 270 W over Coldwater CR

Fair

St. Louis County, Missouri · S 939 T 47 N R 6 E · Structure no. 36416

Built
2020
5 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Prestressed Concrete
Length
108 ft
1 main span
Daily traffic
50,728
2024 count
Owner
State
State Highway Agency

About this bridge

Is 270 W over Coldwater CR is a prestressed concrete tee beam carrying Is 270 W over Coldwater CR in St. Louis County, Missouri. It was built in 2020, so it is 5 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 50,728 vehicles a day, roughly 18% of them trucks, projected to reach 63,410 by 2044. The structure is 108 ft (32.9 m) long and 125 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIs 270 W
CrossesColdwater CR
LocationS 939 T 47 N R 6 E
RouteInterstate 270
CountySt. Louis County
StateMissouri
Coordinates38.77718, -90.35037
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating104.2 US tons
Inventory rating45.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length108 ft (32.9 m)
Longest span105 ft (32 m)
Deck width125 ft (38.2 m)
Roadway width73 ft (22.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50,728 (2024)
Projected traffic63,410 by 2044
Trucks18%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Is 270 W over Coldwater CR built?

It was built in 2020, making it 5 years old in 2025.

What condition is Is 270 W over Coldwater 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 August 2024.

How much traffic does Is 270 W over Coldwater CR carry?

About 50,728 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Is 270 W over Coldwater CR?

The structure is 108 ft (32.9 m) long with a longest span of 105 ft (32 m) and a deck 125 ft wide.

Who owns Is 270 W over Coldwater CR?

It is owned by the State Highway Agency.