US Bridges

Mo 7 S over Gasconade Rvr

Fair

Pulaski County, Missouri · S 34 T 36 N R 13 W · Structure no. 612

Built
1960
65 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
667 ft
3 main spans
Daily traffic
2,201
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 7 S over Gasconade Rvr is a steel continuous stringer/multi-beam or girder carrying Mo 7 S over Gasconade Rvr in Pulaski County, Missouri. It was built in 1960, so it is 65 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 2,201 vehicles a day, roughly 9% of them trucks, projected to reach 3,522 by 2044. The structure is 667 ft (203.3 m) long and 30 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesMo 7 S
CrossesGasconade Rvr
LocationS 34 T 36 N R 13 W
RouteState Highway 7
CountyPulaski County
StateMissouri
Coordinates37.80065, -92.34173
Functional classRural Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
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 rating60.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+4 approach)
Design loadH 20
Structure length667 ft (203.3 m)
Longest span150 ft (45.7 m)
Deck width30 ft (9 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,201 (2024)
Projected traffic3,522 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 7 S over Gasconade Rvr built?

It was built in 1960, making it 65 years old in 2025.

What condition is Mo 7 S over Gasconade Rvr 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 7 S over Gasconade Rvr carry?

About 2,201 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Mo 7 S over Gasconade Rvr?

The structure is 667 ft (203.3 m) long with a longest span of 150 ft (45.7 m) and a deck 30 ft wide.

Who owns Mo 7 S over Gasconade Rvr?

It is owned by the State Highway Agency.