US Bridges

Is 70 W over Cedar Creek

Fair

Callaway County, Missouri · S 10 T 48 N R 11 W · Structure no. 6617

Built
1961
64 years old, rebuilt 1987
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
285 ft
6 main spans
Daily traffic
21,478
2024 count
Owner
State
State Highway Agency

About this bridge

Is 70 W over Cedar Creek is a concrete tee beam carrying Is 70 W over Cedar Creek in Callaway County, Missouri. It was built in 1961 and reconstructed in 1987, 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 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 21,478 vehicles a day, roughly 32% of them trucks, projected to reach 39,734 by 2044. The structure is 285 ft (86.9 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 70 W
CrossesCedar Creek
LocationS 10 T 48 N R 11 W
RouteInterstate 70
Coordinates38.95428, -92.14969
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.5 US tons
Inventory rating38.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length285 ft (86.9 m)
Longest span57 ft (17.5 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,478 (2024)
Projected traffic39,734 by 2044
Trucks32%
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 Cedar Creek built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1987.

What condition is Is 70 W over Cedar Creek 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 Is 70 W over Cedar Creek carry?

About 21,478 vehicles per day (2024 count), of which roughly 32% are trucks.

How long is Is 70 W over Cedar Creek?

The structure is 285 ft (86.9 m) long with a longest span of 57 ft (17.5 m) and a deck 33 ft wide.

Who owns Is 70 W over Cedar Creek?

It is owned by the State Highway Agency.