US Bridges

Mo 49 S over UP RR

Poor

Iron County, Missouri · S 25 T 31 N R 3 E · Structure no. 4779

Built
1927
98 years old
Condition
Poor
inspected October 2024
Type
Tee Beam
Concrete
Length
127 ft
1 main span
Daily traffic
973
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 49 S over UP RR is a concrete tee beam carrying Mo 49 S over UP RR in Iron County, Missouri. It was built in 1927, so it is 98 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 127 ft (38.7 m) long and 23 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesMo 49 S
CrossesUP RR
LocationS 25 T 31 N R 3 E
RouteState Highway 49
CountyIron County
StateMissouri
Coordinates37.34811, -90.67311
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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating34.7 US tons
Inventory rating15.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadH 15
Structure length127 ft (38.7 m)
Longest span38 ft (11.7 m)
Deck width23 ft (7 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
CrossesRailroad
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$1.4 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mo 49 S over UP RR built?

It was built in 1927, making it 98 years old in 2025.

What condition is Mo 49 S over UP RR 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 October 2024.

How much traffic does Mo 49 S over UP RR carry?

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

How long is Mo 49 S over UP RR?

The structure is 127 ft (38.7 m) long with a longest span of 38 ft (11.7 m) and a deck 23 ft wide.

Who owns Mo 49 S over UP RR?

It is owned by the State Highway Agency.