US Bridges

Mo 49 S over Black Rvr

Fair

Wayne County, Missouri · S 35 T 28 N R 3 E · Structure no. 8311

Built
1962
63 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
298 ft
3 main spans
Daily traffic
391
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 49 S over Black Rvr is a steel continuous stringer/multi-beam or girder carrying Mo 49 S over Black Rvr in Wayne County, Missouri. It was built in 1962, so it is 63 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 391 vehicles a day, roughly 10% of them trucks, projected to reach 567 by 2044. The structure is 298 ft (90.8 m) long and 25 ft wide. If it were closed, the detour would be 36 mi (58 km).

Location

Open in Google Maps
CarriesMo 49 S
CrossesBlack Rvr
LocationS 35 T 28 N R 3 E
RouteState Highway 49
CountyWayne County
StateMissouri
Coordinates37.05852, -90.68728
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 rating36.7 US tons
Inventory rating21.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadH 15
Structure length298 ft (90.8 m)
Longest span98 ft (29.9 m)
Deck width25 ft (7.5 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic391 (2024)
Projected traffic567 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed36 mi (58 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 49 S over Black Rvr built?

It was built in 1962, making it 63 years old in 2025.

What condition is Mo 49 S over Black 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 December 2023.

How much traffic does Mo 49 S over Black Rvr carry?

About 391 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Mo 49 S over Black Rvr?

The structure is 298 ft (90.8 m) long with a longest span of 98 ft (29.9 m) and a deck 25 ft wide.

Who owns Mo 49 S over Black Rvr?

It is owned by the State Highway Agency.