US Bridges

Utah ST E over Is 55

Fair

St. Louis city, Missouri · S 34 T 45 N R 7 E · Structure no. 886

Built
1964
61 years old, rebuilt 1985
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
192 ft
2 main spans
Daily traffic
4,382
2024 count
Owner
State
State Highway Agency

About this bridge

Utah ST E over Is 55 is a concrete continuous box beam or girders - single or spread carrying Utah ST E over Is 55 in St. Louis city, Missouri. It was built in 1964 and reconstructed in 1985, so it is 61 years old, older 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 4,382 vehicles a day, roughly 5% of them trucks, projected to reach 6,573 by 2044. The structure is 192 ft (58.5 m) long and 48 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesUtah ST E
CrossesIs 55
LocationS 34 T 45 N R 7 E
RouteCity Street 0
CountySt. Louis city
StateMissouri
Coordinates38.59388, -90.21563
Functional classUrban Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating76.4 US tons
Inventory rating46.6 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length192 ft (58.5 m)
Longest span58 ft (17.7 m)
Deck width48 ft (14.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,382 (2024)
Projected traffic6,573 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 Utah ST E over Is 55 built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1985.

What condition is Utah ST E over Is 55 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 2023.

How much traffic does Utah ST E over Is 55 carry?

About 4,382 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Utah ST E over Is 55?

The structure is 192 ft (58.5 m) long with a longest span of 58 ft (17.7 m) and a deck 48 ft wide.

Who owns Utah ST E over Is 55?

It is owned by the State Highway Agency.