US Bridges

Ferguson Ave over Trra RR

Fair

St. Louis County, Missouri · S 35 T 46 N R 6 E · Structure no. 15583

Built
1980
45 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
132 ft
3 main spans
Daily traffic
2,055
2024 count
Owner
County
County Highway Agency

About this bridge

Ferguson Ave over Trra RR is a prestressed concrete continuous stringer/multi-beam or girder carrying Ferguson Ave over Trra RR in St. Louis County, Missouri. It was built in 1980, so it is 45 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 2,055 vehicles a day, roughly 5% of them trucks, projected to reach 2,774 by 2044. The structure is 132 ft (40.2 m) long and 51 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFerguson Ave
CrossesTrra RR
LocationS 35 T 46 N R 6 E
RouteCounty Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.67859, -90.30831
Functional classUrban Collector

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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating98.2 US tons
Inventory rating58.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length132 ft (40.2 m)
Longest span43 ft (13.1 m)
Deck width51 ft (15.5 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,055 (2024)
Projected traffic2,774 by 2044
Trucks5%
Lanes on structure2
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 Ferguson Ave over Trra RR built?

It was built in 1980, making it 45 years old in 2025.

What condition is Ferguson Ave over Trra RR 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 Ferguson Ave over Trra RR carry?

About 2,055 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Ferguson Ave over Trra RR?

The structure is 132 ft (40.2 m) long with a longest span of 43 ft (13.1 m) and a deck 51 ft wide.

Who owns Ferguson Ave over Trra RR?

It is owned by the County Highway Agency.