US Bridges

Rt a E over Is 55

Fair

Jefferson County, Missouri · S 194 T 40 N R 6 E · Structure no. 11898

Built
1999
26 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
170 ft
2 main spans
Daily traffic
21,563
2024 count
Owner
State
State Highway Agency

About this bridge

Rt a E over Is 55 is a prestressed concrete continuous stringer/multi-beam or girder carrying Rt a E over Is 55 in Jefferson County, Missouri. It was built in 1999, so it is 26 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 21,563 vehicles a day, roughly 5% of them trucks, projected to reach 36,657 by 2044. The structure is 170 ft (51.8 m) long and 194 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRt a E
CrossesIs 55
LocationS 194 T 40 N R 6 E
RouteState Highway 0A
Coordinates38.21338, -90.40554
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.4 US tons
Inventory rating44.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length170 ft (51.8 m)
Longest span85 ft (25.9 m)
Deck width194 ft (59 m)
Roadway width191 ft (58.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,563 (2024)
Projected traffic36,657 by 2044
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rt a E over Is 55 built?

It was built in 1999, making it 26 years old in 2025.

What condition is Rt a 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 November 2024.

How much traffic does Rt a E over Is 55 carry?

About 21,563 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Rt a E over Is 55?

The structure is 170 ft (51.8 m) long with a longest span of 85 ft (25.9 m) and a deck 194 ft wide.

Who owns Rt a E over Is 55?

It is owned by the State Highway Agency.