US Bridges

Elizabeth Ave S over Is 270

Good

St. Louis County, Missouri · S 31 T 47 N R 7 E · Structure no. 36370

Built
2020
5 years old
Condition
Good
inspected August 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
203 ft
2 main spans
Daily traffic
11,969
2024 count
Owner
State
State Highway Agency

About this bridge

Elizabeth Ave S over Is 270 is a prestressed concrete continuous tee beam carrying Elizabeth Ave S over Is 270 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11,969 vehicles a day, roughly 5% of them trucks, projected to reach 16,757 by 2044. The structure is 203 ft (61.8 m) long and 88 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesElizabeth Ave S
CrossesIs 270
LocationS 31 T 47 N R 7 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.77274, -90.30773
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.3 US tons
Inventory rating50.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length203 ft (61.8 m)
Longest span99 ft (30.2 m)
Deck width88 ft (26.7 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,969 (2024)
Projected traffic16,757 by 2044
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Elizabeth Ave S over Is 270 built?

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

What condition is Elizabeth Ave S over Is 270 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does Elizabeth Ave S over Is 270 carry?

About 11,969 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Elizabeth Ave S over Is 270?

The structure is 203 ft (61.8 m) long with a longest span of 99 ft (30.2 m) and a deck 88 ft wide.

Who owns Elizabeth Ave S over Is 270?

It is owned by the State Highway Agency.