US Bridges

US 169 S over Mid Fk Grand Rvr

Fair

Gentry County, Missouri · S 20 T 64 N R 31 W · Structure no. 527

Built
1961
64 years old, rebuilt 2020
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
429 ft
3 main spans
Daily traffic
601
2024 count
Owner
State
State Highway Agency

About this bridge

US 169 S over Mid Fk Grand Rvr is a steel continuous stringer/multi-beam or girder carrying US 169 S over Mid Fk Grand Rvr in Gentry County, Missouri. It was built in 1961 and reconstructed in 2020, 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 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 601 vehicles a day, roughly 21% of them trucks, projected to reach 811 by 2044. The structure is 429 ft (130.8 m) long and 31 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesUS 169 S
CrossesMid Fk Grand Rvr
LocationS 20 T 64 N R 31 W
RouteU.S. Route 169
CountyGentry County
StateMissouri
Coordinates40.3328, -94.41066
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating23.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadH 20
Structure length429 ft (130.8 m)
Longest span115 ft (35.1 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic601 (2024)
Projected traffic811 by 2044
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 US 169 S over Mid Fk Grand Rvr built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2020.

What condition is US 169 S over Mid Fk Grand 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 May 2024.

How much traffic does US 169 S over Mid Fk Grand Rvr carry?

About 601 vehicles per day (2024 count), of which roughly 21% are trucks.

How long is US 169 S over Mid Fk Grand Rvr?

The structure is 429 ft (130.8 m) long with a longest span of 115 ft (35.1 m) and a deck 31 ft wide.

Who owns US 169 S over Mid Fk Grand Rvr?

It is owned by the State Highway Agency.