US Bridges

Rt M E over Mill Dam CR

Fair

Iron County, Missouri · S 1 T 33 N R 3 E · Structure no. 9702

Built
1948
77 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
248
2024 count
Owner
State
State Highway Agency

About this bridge

Rt M E over Mill Dam CR is a concrete continuous culvert carrying Rt M E over Mill Dam CR in Iron County, Missouri. It was built in 1948, so it is 77 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 248 vehicles a day, roughly 11% of them trucks, projected to reach 347 by 2044. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesRt M E
CrossesMill Dam CR
LocationS 1 T 33 N R 3 E
RouteState Highway 0M
Coordinates37.59099, -90.65781
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.5 US tons
Inventory rating37.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 10
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic248 (2024)
Projected traffic347 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Rt M E over Mill Dam CR built?

It was built in 1948, making it 77 years old in 2025.

What condition is Rt M E over Mill Dam CR 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 Rt M E over Mill Dam CR carry?

About 248 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Rt M E over Mill Dam CR?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Rt M E over Mill Dam CR?

It is owned by the State Highway Agency.