US Bridges

Rt D S over Is 70

Good

Callaway County, Missouri · S 21 T 48 N R 7 W · Structure no. 21

Built
1963
62 years old, rebuilt 2009
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
201 ft
4 main spans
Daily traffic
1,229
2024 count
Owner
State
State Highway Agency

About this bridge

Rt D S over Is 70 is a steel continuous stringer/multi-beam or girder carrying Rt D 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,229 vehicles a day, roughly 10% of them trucks, projected to reach 1,905 by 2044. The structure is 201 ft (61.3 m) long and 29 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesRt D S
CrossesIs 70
LocationS 21 T 48 N R 7 W
RouteState Highway 0D
Coordinates38.91136, -91.7006
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.7 US tons
Inventory rating20.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length201 ft (61.3 m)
Longest span56 ft (17.1 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,229 (2024)
Projected traffic1,905 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed16.2 mi (26 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 D 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 D S over Is 70 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

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

About 1,229 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Rt D S over Is 70?

The structure is 201 ft (61.3 m) long with a longest span of 56 ft (17.1 m) and a deck 29 ft wide.

Who owns Rt D S over Is 70?

It is owned by the State Highway Agency.