US Bridges

Rt Z E over Is 55

Poor

Ste. Genevieve County, Missouri · S 2045 T 36 N R 9 E · Structure no. 2128

Built
1970
55 years old, rebuilt 1984
Condition
Poor
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
255 ft
2 main spans
Daily traffic
716
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Z E over Is 55 is a steel continuous stringer/multi-beam or girder carrying Rt Z E over Is 55 in Ste. Genevieve County, Missouri. It was built in 1970 and reconstructed in 1984, so it is 55 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 716 vehicles a day, roughly 11% of them trucks, projected to reach 1,002 by 2044. The structure is 255 ft (77.7 m) long and 36 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesRt Z E
CrossesIs 55
LocationS 2045 T 36 N R 9 E
RouteState Highway 0Z
Coordinates37.84694, -90.00224
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating24.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadH 15
Structure length255 ft (77.7 m)
Longest span86 ft (26.2 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic716 (2024)
Projected traffic1,002 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed14.9 mi (24 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$1.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rt Z E over Is 55 built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1984.

What condition is Rt Z E over Is 55 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

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

About 716 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Rt Z E over Is 55?

The structure is 255 ft (77.7 m) long with a longest span of 86 ft (26.2 m) and a deck 36 ft wide.

Who owns Rt Z E over Is 55?

It is owned by the State Highway Agency.