US Bridges

Rt Jj S over Brock CR

FairPosted for load

Washington County, Missouri · S 3321 T 35 N R 2 E · Structure no. 8324

Built
1963
62 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
179 ft
3 main spans
Daily traffic
311
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Jj S over Brock CR is a steel continuous stringer/multi-beam or girder carrying Rt Jj S over Brock CR in Washington County, Missouri. It was built in 1963, so it is 62 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 311 vehicles a day, roughly 10% of them trucks, projected to reach 435 by 2044. The structure is 179 ft (54.6 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesRt Jj S
CrossesBrock CR
LocationS 3321 T 35 N R 2 E
RouteState Highway 0JJ
CountyWashington County
StateMissouri
Coordinates37.77714, -90.85961
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating24.8 US tons
Inventory rating13.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length179 ft (54.6 m)
Longest span70 ft (21.3 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic311 (2024)
Projected traffic435 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Jj S over Brock CR built?

It was built in 1963, making it 62 years old in 2025.

What condition is Rt Jj S over Brock 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 June 2024.

How much traffic does Rt Jj S over Brock CR carry?

About 311 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Rt Jj S over Brock CR?

The structure is 179 ft (54.6 m) long with a longest span of 70 ft (21.3 m) and a deck 24 ft wide.

Who owns Rt Jj S over Brock CR?

It is owned by the State Highway Agency.