US Bridges

County RD 1023 over Milligan CR

FairPosted for load

Monroe County, Missouri · S 17 T 53 N R 12 W · Structure no. 16310

Built
1979
46 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
84 ft
3 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 1023 over Milligan CR is a steel stringer/multi-beam or girder carrying County RD 1023 over Milligan CR in Monroe County, Missouri. It was built in 1979, so it is 46 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 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 63 by 2043. The structure is 84 ft (25.6 m) long and 18 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesCounty RD 1023
CrossesMilligan CR
LocationS 17 T 53 N R 12 W
RouteCounty Highway 116
CountyMonroe County
StateMissouri
Coordinates39.38397, -92.28128
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating18.8 US tons
Inventory rating8.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 10
Structure length84 ft (25.6 m)
Longest span41 ft (12.5 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic63 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$638,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 1023 over Milligan CR built?

It was built in 1979, making it 46 years old in 2025.

What condition is County RD 1023 over Milligan 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 May 2024.

How much traffic does County RD 1023 over Milligan CR carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 1023 over Milligan CR?

The structure is 84 ft (25.6 m) long with a longest span of 41 ft (12.5 m) and a deck 18 ft wide.

Who owns County RD 1023 over Milligan CR?

It is owned by the County Highway Agency.