US Bridges

Rt Jj S over Is 70

Fair

Callaway County, Missouri · S 18 T 48 N R 8 W · Structure no. 6692

Built
1963
62 years old, rebuilt 2009
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
223 ft
4 main spans
Daily traffic
296
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Jj S over Is 70 is a steel continuous stringer/multi-beam or girder carrying Rt Jj S over Is 70 in Callaway County, Missouri. It was built in 1963 and reconstructed in 2009, 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 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 296 vehicles a day, roughly 11% of them trucks, projected to reach 459 by 2044. The structure is 223 ft (68 m) long and 29 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesRt Jj S
CrossesIs 70
LocationS 18 T 48 N R 8 W
RouteState Highway 0JJ
CountyCallaway County
StateMissouri
Coordinates38.93944, -91.86549
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.7 US tons
Inventory rating20.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length223 ft (68 m)
Longest span67 ft (20.4 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic296 (2024)
Projected traffic459 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed14.3 mi (23 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rt Jj S over Is 70 built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2009.

What condition is Rt Jj S over Is 70 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 October 2024.

How much traffic does Rt Jj S over Is 70 carry?

About 296 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Rt Jj S over Is 70?

The structure is 223 ft (68 m) long with a longest span of 67 ft (20.4 m) and a deck 29 ft wide.

Who owns Rt Jj S over Is 70?

It is owned by the State Highway Agency.