US Bridges

Rt W S over Big Rvr

FairPosted for load

Jefferson County, Missouri · S 32 T 43 N R 4 E · Structure no. 2487

Built
1977
48 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
602 ft
3 main spans
Daily traffic
9,781
2024 count
Owner
State
State Highway Agency

About this bridge

Rt W S over Big Rvr is a steel continuous stringer/multi-beam or girder carrying Rt W S over Big Rvr in Jefferson County, Missouri. It was built in 1977, so it is 48 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 9,781 vehicles a day, roughly 5% of them trucks, projected to reach 18,095 by 2044. The structure is 602 ft (183.5 m) long and 47 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

CarriesRt W S
CrossesBig Rvr
LocationS 32 T 43 N R 4 E
RouteState Highway 0W
Coordinates38.41953, -90.59018
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating28.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+5 approach)
Design loadH 20
Structure length602 ft (183.5 m)
Longest span130 ft (39.6 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,781 (2024)
Projected traffic18,095 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Rt W S over Big Rvr built?

It was built in 1977, making it 48 years old in 2025.

What condition is Rt W S over Big Rvr 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 February 2025.

How much traffic does Rt W S over Big Rvr carry?

About 9,781 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Rt W S over Big Rvr?

The structure is 602 ft (183.5 m) long with a longest span of 130 ft (39.6 m) and a deck 47 ft wide.

Who owns Rt W S over Big Rvr?

It is owned by the State Highway Agency.