US Bridges

Rt F S over Is 70

FairPosted for load

Montgomery County, Missouri · S 4 T 47 N R 4 W · Structure no. 627

Built
1961
64 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
207 ft
4 main spans
Daily traffic
809
2024 count
Owner
State
State Highway Agency

About this bridge

Rt F S over Is 70 is a concrete continuous slab carrying Rt F S over Is 70 in Montgomery County, Missouri. It was built in 1961, 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 809 vehicles a day, roughly 16% of them trucks, projected to reach 1,173 by 2044. The structure is 207 ft (63.1 m) long and 29 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesRt F S
CrossesIs 70
LocationS 4 T 47 N R 4 W
RouteState Highway 0F
CountyMontgomery County
StateMissouri
Coordinates38.87394, -91.37331
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.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 rating43.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length207 ft (63.1 m)
Longest span57 ft (17.4 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic809 (2024)
Projected traffic1,173 by 2044
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.7 mi (14 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 F S over Is 70 built?

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

What condition is Rt F S 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 September 2024.

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

About 809 vehicles per day (2024 count), of which roughly 16% are trucks.

How long is Rt F S over Is 70?

The structure is 207 ft (63.1 m) long with a longest span of 57 ft (17.4 m) and a deck 29 ft wide.

Who owns Rt F S over Is 70?

It is owned by the State Highway Agency.