US Bridges

Mo 49 S over Sutton Br

Fair

Iron County, Missouri · S 23 T 31 N R 3 E · Structure no. 4680

Built
1924
101 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete
Length
28 ft
1 main span
Daily traffic
1,344
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 49 S over Sutton Br is a concrete tee beam carrying Mo 49 S over Sutton Br in Iron County, Missouri. It was built in 1924, so it is 101 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 1,344 vehicles a day, roughly 10% of them trucks, projected to reach 2,016 by 2044. The structure is 28 ft (8.5 m) long and 23 ft wide. If it were closed, the detour would be 80.2 mi (129 km).

Location

Open in Google Maps
CarriesMo 49 S
CrossesSutton Br
LocationS 23 T 31 N R 3 E
RouteState Highway 49
CountyIron County
StateMissouri
Coordinates37.35879, -90.67873
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating67.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length28 ft (8.5 m)
Longest span25 ft (7.6 m)
Deck width23 ft (7.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,344 (2024)
Projected traffic2,016 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed80.2 mi (129 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$290,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 49 S over Sutton Br built?

It was built in 1924, making it 101 years old in 2025.

What condition is Mo 49 S over Sutton Br 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 October 2023.

How much traffic does Mo 49 S over Sutton Br carry?

About 1,344 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Mo 49 S over Sutton Br?

The structure is 28 ft (8.5 m) long with a longest span of 25 ft (7.6 m) and a deck 23 ft wide.

Who owns Mo 49 S over Sutton Br?

It is owned by the State Highway Agency.