US Bridges

Lindell-Union over Forest Park Pkwy

PoorPosted for load

St. Louis city, Missouri · S 18 T 45 N R 7 E · Structure no. 13487

Built
1961
64 years old
Condition
Poor
inspected April 2024
Type
Slab
Concrete Continuous
Length
86 ft
1 main span
Daily traffic
33,500
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lindell-Union over Forest Park Pkwy is a concrete continuous slab carrying Lindell-Union over Forest Park Pkwy in St. Louis city, Missouri. It was built in 1961, so it is 64 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 3 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. Its operating status is: posted for load restriction.

It carries about 33,500 vehicles a day, roughly 5% of them trucks, projected to reach 45,225 by 2043. The structure is 86 ft (26.3 m) long and 339 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesLindell-Union
CrossesForest Park Pkwy
LocationS 18 T 45 N R 7 E
RouteCity Street 0
Coordinates38.64501, -90.2749
Functional classUrban Minor Arterial

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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.7 US tons
Inventory rating25.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length86 ft (26.3 m)
Longest span85 ft (25.9 m)
Deck width339 ft (103.3 m)
Roadway width123 ft (37.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,500 (2023)
Projected traffic45,225 by 2043
Trucks5%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Lindell-Union over Forest Park Pkwy built?

It was built in 1961, making it 64 years old in 2025.

What condition is Lindell-Union over Forest Park Pkwy 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 April 2024.

How much traffic does Lindell-Union over Forest Park Pkwy carry?

About 33,500 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Lindell-Union over Forest Park Pkwy?

The structure is 86 ft (26.3 m) long with a longest span of 85 ft (25.9 m) and a deck 339 ft wide.

Who owns Lindell-Union over Forest Park Pkwy?

It is owned by the City or Municipal Highway Agency.