US Bridges

Mo 49 S over Br

Poor

Iron County, Missouri · S 1 T 30 N R 3 E · Structure no. 4699

Built
1924
101 years old
Condition
Poor
inspected August 2023
Type
Truss - Thru
Steel
Length
60 ft
1 main span
Daily traffic
973
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 49 S over Br is a steel truss - thru carrying Mo 49 S over 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 973 vehicles a day, roughly 12% of them trucks, projected to reach 1,460 by 2044. The structure is 60 ft (18.3 m) long and 21 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesMo 49 S
CrossesBr
LocationS 1 T 30 N R 3 E
RouteState Highway 49
CountyIron County
StateMissouri
Coordinates37.31042, -90.6634
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, 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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26.8 US tons
Inventory rating18.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic973 (2024)
Projected traffic1,460 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$713,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 49 S over Br built?

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

What condition is Mo 49 S over Br in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does Mo 49 S over Br carry?

About 973 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Mo 49 S over Br?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 21 ft wide.

Who owns Mo 49 S over Br?

It is owned by the State Highway Agency.