US Bridges

Is 70 W over Auxvasse CR

Fair

Callaway County, Missouri · S 17 T 48 N R 8 W · Structure no. 77

Built
1963
62 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
379 ft
3 main spans
Daily traffic
19,753
2024 count
Owner
State
State Highway Agency

About this bridge

Is 70 W over Auxvasse CR is a steel continuous stringer/multi-beam or girder carrying Is 70 W over Auxvasse CR in Callaway 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.

It carries about 19,753 vehicles a day, roughly 38% of them trucks, projected to reach 36,543 by 2044. The structure is 379 ft (115.5 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 70 W
CrossesAuxvasse CR
LocationS 17 T 48 N R 8 W
RouteInterstate 70
CountyCallaway County
StateMissouri
Coordinates38.93622, -91.84345
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+5 approach)
Design loadHS 20
Structure length379 ft (115.5 m)
Longest span80 ft (24.4 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,753 (2024)
Projected traffic36,543 by 2044
Trucks38%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Is 70 W over Auxvasse CR built?

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

What condition is Is 70 W over Auxvasse 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 Is 70 W over Auxvasse CR carry?

About 19,753 vehicles per day (2024 count), of which roughly 38% are trucks.

How long is Is 70 W over Auxvasse CR?

The structure is 379 ft (115.5 m) long with a longest span of 80 ft (24.4 m) and a deck 33 ft wide.

Who owns Is 70 W over Auxvasse CR?

It is owned by the State Highway Agency.