US Bridges

Forest Ave over BNSF RR

Fair

St. Louis County, Missouri · S 11 T 44 N R 5 E · Structure no. 19640

Built
1994
31 years old
Condition
Fair
inspected January 2024
Type
Tee Beam
Prestressed Concrete
Length
251 ft
5 main spans
Daily traffic
1,450
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Forest Ave over BNSF RR is a prestressed concrete tee beam carrying Forest Ave over BNSF RR in St. Louis County, Missouri. It was built in 1994, so it is 31 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 1,450 vehicles a day, roughly 1% of them trucks, projected to reach 1,958 by 2043. The structure is 251 ft (76.5 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesForest Ave
CrossesBNSF RR
LocationS 11 T 44 N R 5 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.56512, -90.42216
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length251 ft (76.5 m)
Longest span50 ft (15.2 m)
Deck width33 ft (10.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,450 (2023)
Projected traffic1,958 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Forest Ave over BNSF RR built?

It was built in 1994, making it 31 years old in 2025.

What condition is Forest Ave over BNSF 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 January 2024.

How much traffic does Forest Ave over BNSF RR carry?

About 1,450 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Forest Ave over BNSF RR?

The structure is 251 ft (76.5 m) long with a longest span of 50 ft (15.2 m) and a deck 33 ft wide.

Who owns Forest Ave over BNSF RR?

It is owned by the City or Municipal Highway Agency.