US Bridges

US 54 W over Is 70

Fair

Callaway County, Missouri · S 9 T 48 N R 9 W · Structure no. 6628

Built
1963
62 years old, rebuilt 1990
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
211 ft
4 main spans
Daily traffic
6,989
2024 count
Owner
State
State Highway Agency

About this bridge

US 54 W over Is 70 is a concrete continuous slab carrying US 54 W over Is 70 in Callaway County, Missouri. It was built in 1963 and reconstructed in 1990, 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 6,989 vehicles a day, roughly 16% of them trucks, projected to reach 12,930 by 2044. The structure is 211 ft (64.3 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesUS 54 W
CrossesIs 70
LocationS 9 T 48 N R 9 W
RouteU.S. Route 54
CountyCallaway County
StateMissouri
Coordinates38.94434, -91.94124
Functional classRural Principal Arterial - Other

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.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.5 US tons
Inventory rating38.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length211 ft (64.3 m)
Longest span56 ft (17.1 m)
Deck width44 ft (13.3 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,989 (2024)
Projected traffic12,930 by 2044
Trucks16%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 54 W over Is 70 built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1990.

What condition is US 54 W 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 US 54 W over Is 70 carry?

About 6,989 vehicles per day (2024 count), of which roughly 16% are trucks.

How long is US 54 W over Is 70?

The structure is 211 ft (64.3 m) long with a longest span of 56 ft (17.1 m) and a deck 44 ft wide.

Who owns US 54 W over Is 70?

It is owned by the State Highway Agency.