US Bridges

Couch Ave over Sugar CR

FairPosted for load

St. Louis County, Missouri · S 2 T 44 N R 5 E · Structure no. 19633

Built
1965
60 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
43 ft
3 main spans
Daily traffic
2,845
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Couch Ave over Sugar CR is a concrete continuous culvert carrying Couch Ave over Sugar CR in St. Louis County, Missouri. It was built in 1965, so it is 60 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 2,845 vehicles a day, roughly 2% of them trucks, projected to reach 3,841 by 2043. The structure is 43 ft (13.1 m) long and 45 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCouch Ave
CrossesSugar CR
LocationS 2 T 44 N R 5 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.58235, -90.42502
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating83.3 US tons
Inventory rating25.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length43 ft (13.1 m)
Longest span12 ft (3.7 m)
Deck width45 ft (13.7 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,845 (2023)
Projected traffic3,841 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$153,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Couch Ave over Sugar CR built?

It was built in 1965, making it 60 years old in 2025.

What condition is Couch Ave over Sugar 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 Couch Ave over Sugar CR carry?

About 2,845 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Couch Ave over Sugar CR?

The structure is 43 ft (13.1 m) long with a longest span of 12 ft (3.7 m) and a deck 45 ft wide.

Who owns Couch Ave over Sugar CR?

It is owned by the City or Municipal Highway Agency.