US Bridges

Dade Ave over NS RR

FairPosted for load

St. Louis County, Missouri · S 2 T 46 N R 6 E · Structure no. 28622

Built
1955
70 years old, rebuilt 2001
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
118 ft
3 main spans
Daily traffic
1,820
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Dade Ave over NS RR is a steel continuous stringer/multi-beam or girder carrying Dade Ave over NS RR in St. Louis County, Missouri. It was built in 1955 and reconstructed in 2001, so it is 70 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 1,820 vehicles a day, roughly 10% of them trucks, projected to reach 2,457 by 2043. The structure is 118 ft (36 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDade Ave
CrossesNS RR
LocationS 2 T 46 N R 6 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.75099, -90.3151
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating79.4 US tons
Inventory rating47.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length118 ft (36 m)
Longest span44 ft (13.4 m)
Deck width37 ft (11.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,820 (2023)
Projected traffic2,457 by 2043
Trucks10%
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 Dade Ave over NS RR built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 2001.

What condition is Dade Ave over NS 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 December 2023.

How much traffic does Dade Ave over NS RR carry?

About 1,820 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Dade Ave over NS RR?

The structure is 118 ft (36 m) long with a longest span of 44 ft (13.4 m) and a deck 37 ft wide.

Who owns Dade Ave over NS RR?

It is owned by the City or Municipal Highway Agency.