US Bridges

Rt Bb E over Sons CR

Fair

Dade County, Missouri · S 4 T 31 N R 27 W · Structure no. 8109

Built
1961
64 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
196 ft
3 main spans
Daily traffic
411
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Bb E over Sons CR is a steel continuous stringer/multi-beam or girder carrying Rt Bb E over Sons CR in Dade County, Missouri. It was built in 1961, so it is 64 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.

It carries about 411 vehicles a day, roughly 21% of them trucks, projected to reach 534 by 2044. The structure is 196 ft (59.7 m) long and 22 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesRt Bb E
CrossesSons CR
LocationS 4 T 31 N R 27 W
RouteState Highway 0BB
CountyDade County
StateMissouri
Coordinates37.45491, -93.89918
Functional classRural Minor 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.8 US tons
Inventory rating14.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length196 ft (59.7 m)
Longest span80 ft (24.4 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic411 (2024)
Projected traffic534 by 2044
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt Bb E over Sons CR built?

It was built in 1961, making it 64 years old in 2025.

What condition is Rt Bb E over Sons 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 November 2024.

How much traffic does Rt Bb E over Sons CR carry?

About 411 vehicles per day (2024 count), of which roughly 21% are trucks.

How long is Rt Bb E over Sons CR?

The structure is 196 ft (59.7 m) long with a longest span of 80 ft (24.4 m) and a deck 22 ft wide.

Who owns Rt Bb E over Sons CR?

It is owned by the State Highway Agency.