US Bridges

Kienlen Ave over Trra of St.Louis R

FairPosted for load

St. Louis County, Missouri · S 36 T 46 N R 6 E · Structure no. 15591

Built
1983
42 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
69 ft
1 main span
Daily traffic
14,224
2024 count
Owner
County
County Highway Agency

About this bridge

Kienlen Ave over Trra of St.Louis R is a prestressed concrete stringer/multi-beam or girder carrying Kienlen Ave over Trra of St.Louis R in St. Louis County, Missouri. It was built in 1983, so it is 42 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. Its operating status is: posted for load restriction.

It carries about 14,224 vehicles a day, roughly 5% of them trucks, projected to reach 19,202 by 2044. The structure is 69 ft (21 m) long and 80 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesKienlen Ave
CrossesTrra of St.Louis R
LocationS 36 T 46 N R 6 E
RouteCounty Highway 0
Coordinates38.68363, -90.28196
Functional classUrban Minor 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating98.2 US tons
Inventory rating74.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length69 ft (21 m)
Longest span66 ft (20.1 m)
Deck width80 ft (24.3 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,224 (2024)
Projected traffic19,202 by 2044
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Kienlen Ave over Trra of St.Louis R built?

It was built in 1983, making it 42 years old in 2025.

What condition is Kienlen Ave over Trra of St.Louis R 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 February 2024.

How much traffic does Kienlen Ave over Trra of St.Louis R carry?

About 14,224 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Kienlen Ave over Trra of St.Louis R?

The structure is 69 ft (21 m) long with a longest span of 66 ft (20.1 m) and a deck 80 ft wide.

Who owns Kienlen Ave over Trra of St.Louis R?

It is owned by the County Highway Agency.