US Bridges

W Watson RD over Trib B

Fair

St. Louis County, Missouri · S 23 T 44 N R 5 E · Structure no. 33414

Built
2012
13 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
33 ft
3 main spans
Daily traffic
3,240
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

W Watson RD over Trib B is a concrete continuous culvert carrying W Watson RD over Trib B in St. Louis County, Missouri. It was built in 2012, so it is 13 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 3,240 vehicles a day, roughly 2% of them trucks, projected to reach 4,374 by 2043. The structure is 33 ft (10.2 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesW Watson RD
CrossesTrib B
LocationS 23 T 44 N R 5 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.53105, -90.42156
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: 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 rating64.5 US tons
Inventory rating38.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length33 ft (10.2 m)
Longest span11 ft (3.4 m)
Deck width41 ft (12.6 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,240 (2023)
Projected traffic4,374 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W Watson RD over Trib B built?

It was built in 2012, making it 13 years old in 2025.

What condition is W Watson RD over Trib B 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 November 2023.

How much traffic does W Watson RD over Trib B carry?

About 3,240 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is W Watson RD over Trib B?

The structure is 33 ft (10.2 m) long with a longest span of 11 ft (3.4 m) and a deck 41 ft wide.

Who owns W Watson RD over Trib B?

It is owned by the City or Municipal Highway Agency.