US Bridges

Rt B S over Big Rvr

Fair

Jefferson County, Missouri · S 371 T 41 N R 3 E · Structure no. 29585

Built
2003
22 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
732 ft
3 main spans
Daily traffic
6,176
2024 count
Owner
State
State Highway Agency

About this bridge

Rt B S over Big Rvr is a steel continuous stringer/multi-beam or girder carrying Rt B S over Big Rvr in Jefferson County, Missouri. It was built in 2003, so it is 22 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 6,176 vehicles a day, roughly 11% of them trucks, projected to reach 10,499 by 2044. The structure is 732 ft (223.2 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRt B S
CrossesBig Rvr
LocationS 371 T 41 N R 3 E
RouteState Highway 0B
Coordinates38.27655, -90.64751
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.4 US tons
Inventory rating41.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+3 approach)
Design loadHS 20
Structure length732 ft (223.2 m)
Longest span180 ft (54.9 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,176 (2024)
Projected traffic10,499 by 2044
Trucks11%
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

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 B S over Big Rvr built?

It was built in 2003, making it 22 years old in 2025.

What condition is Rt B 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 December 2024.

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

About 6,176 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Rt B S over Big Rvr?

The structure is 732 ft (223.2 m) long with a longest span of 180 ft (54.9 m) and a deck 43 ft wide.

Who owns Rt B S over Big Rvr?

It is owned by the State Highway Agency.