US Bridges

Adams CR RD over Mid Fk Black Rvr

FairPosted for load

Iron County, Missouri · S 12 T 34 N R 1 W · Structure no. 14678

Built
1991
34 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
64 ft
4 main spans
Daily traffic
35
2023 count
Owner
County
County Highway Agency

About this bridge

Adams CR RD over Mid Fk Black Rvr is a steel stringer/multi-beam or girder carrying Adams CR RD over Mid Fk Black Rvr in Iron County, Missouri. It was built in 1991, so it is 34 years old, younger 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 42 by 2043. The structure is 64 ft (19.5 m) long and 17 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesAdams CR RD
CrossesMid Fk Black Rvr
LocationS 12 T 34 N R 1 W
RouteCounty Highway 72
CountyIron County
StateMissouri
Coordinates37.6616, -90.9963
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating17.9 US tons
Inventory rating10.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length64 ft (19.5 m)
Longest span16 ft (4.9 m)
Deck width17 ft (5.3 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2023)
Projected traffic42 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$494,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Adams CR RD over Mid Fk Black Rvr built?

It was built in 1991, making it 34 years old in 2025.

What condition is Adams CR RD over Mid Fk 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 February 2025.

How much traffic does Adams CR RD over Mid Fk Black Rvr carry?

About 35 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Adams CR RD over Mid Fk Black Rvr?

The structure is 64 ft (19.5 m) long with a longest span of 16 ft (4.9 m) and a deck 17 ft wide.

Who owns Adams CR RD over Mid Fk Black Rvr?

It is owned by the County Highway Agency.