US Bridges

S Brentwood Blvd over Shady Grove CR

FairPosted for load

St. Louis County, Missouri · S 1953 T 45 N R 6 E · Structure no. 24021

Built
1900
125 years old, rebuilt 1984
Condition
Fair
inspected January 2024
Type
Culvert
Steel
Length
31 ft
1 main span
Daily traffic
6,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

S Brentwood Blvd over Shady Grove CR is a steel culvert carrying S Brentwood Blvd over Shady Grove CR in St. Louis County, Missouri. It was built in 1900 and reconstructed in 1984, so it is 125 years old, older 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 5 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 6,000 vehicles a day, roughly 4% of them trucks, projected to reach 8,100 by 2043. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesS Brentwood Blvd
CrossesShady Grove CR
LocationS 1953 T 45 N R 6 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.60184, -90.35276
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating24.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadOther
Structure length31 ft (9.4 m)
Longest span25 ft (7.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2023)
Projected traffic8,100 by 2043
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S Brentwood Blvd over Shady Grove CR built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1984.

What condition is S Brentwood Blvd over Shady Grove CR 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 S Brentwood Blvd over Shady Grove CR carry?

About 6,000 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S Brentwood Blvd over Shady Grove CR?

The structure is 31 ft (9.4 m) long with a longest span of 25 ft (7.6 m).

Who owns S Brentwood Blvd over Shady Grove CR?

It is owned by the City or Municipal Highway Agency.