US Bridges

Is 55 S over Cst S Lenore K Sulliva

Fair

St. Louis city, Missouri · S 23 T 45 N R 7 E · Structure no. 1244

Built
1963
62 years old, rebuilt 2016
Condition
Fair
inspected October 2024
Type
Other
Steel Continuous
Length
2,165 ft
5 main spans
Daily traffic
120,209
2024 count
Owner
State
State Highway Agency

About this bridge

Is 55 S over Cst S Lenore K Sulliva is a steel continuous other carrying Is 55 S over Cst S Lenore K Sulliva in St. Louis city, Missouri. It was built in 1963 and reconstructed in 2016, so it is 62 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 120,209 vehicles a day, roughly 18% of them trucks, projected to reach 150,261 by 2044. The structure is 2,165 ft (659.9 m) long and 122 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 55 S
CrossesCst S Lenore K Sulliva
LocationS 23 T 45 N R 7 E
RouteInterstate 55
Coordinates38.61843, -90.18437
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeOther
MaterialSteel Continuous
DeckSteel plate
Main spans5
Design loadHS 20
Structure length2,165 ft (659.9 m)
Longest span600 ft (182.9 m)
Deck width122 ft (37.2 m)
Roadway width117 ft (35.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120,209 (2024)
Projected traffic150,261 by 2044
Trucks18%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed0.6 mi (1 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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Is 55 S over Cst S Lenore K Sulliva built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2016.

What condition is Is 55 S over Cst S Lenore K Sulliva 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 October 2024.

How much traffic does Is 55 S over Cst S Lenore K Sulliva carry?

About 120,209 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Is 55 S over Cst S Lenore K Sulliva?

The structure is 2,165 ft (659.9 m) long with a longest span of 600 ft (182.9 m) and a deck 122 ft wide.

Who owns Is 55 S over Cst S Lenore K Sulliva?

It is owned by the State Highway Agency.