US Bridges

Mo 64A E over Spring CR

Fair

Laclede County, Missouri · S 31 T 34 N R 17 W · Structure no. 9124

Built
1934
91 years old
Condition
Fair
inspected August 2023
Type
Arch - Deck
Concrete Continuous
Length
129 ft
3 main spans
Daily traffic
1,057
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 64A E over Spring CR is a concrete continuous arch - deck carrying Mo 64A E over Spring CR in Laclede County, Missouri. It was built in 1934, so it is 91 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 1,057 vehicles a day, roughly 13% of them trucks, projected to reach 1,586 by 2044. The structure is 129 ft (39.3 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMo 64A E
CrossesSpring CR
LocationS 31 T 34 N R 17 W
RouteState Highway 0
CountyLaclede County
StateMissouri
Coordinates37.72387, -92.85551
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.5 US tons
Inventory rating23.8 US tons

Structure

Structure typeArch - Deck
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 15
Structure length129 ft (39.3 m)
Longest span41 ft (12.5 m)
Deck width30 ft (9.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,057 (2024)
Projected traffic1,586 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$952,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 64A E over Spring CR built?

It was built in 1934, making it 91 years old in 2025.

What condition is Mo 64A E over Spring 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 August 2023.

How much traffic does Mo 64A E over Spring CR carry?

About 1,057 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Mo 64A E over Spring CR?

The structure is 129 ft (39.3 m) long with a longest span of 41 ft (12.5 m) and a deck 30 ft wide.

Who owns Mo 64A E over Spring CR?

It is owned by the State Highway Agency.