US Bridges

Bunker Hill RD over Trib of Lake CR

FairPosted for load

Pettis County, Missouri · S 23 T 44 N R 20 W · Structure no. 20368

Built
1920
105 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
2 main spans
Daily traffic
25
2024 count
Owner
County
County Highway Agency

About this bridge

Bunker Hill RD over Trib of Lake CR is a steel stringer/multi-beam or girder carrying Bunker Hill RD over Trib of Lake CR in Pettis County, Missouri. It was built in 1920, so it is 105 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 43 by 2044. The structure is 41 ft (12.5 m) long and 14 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesBunker Hill RD
CrossesTrib of Lake CR
LocationS 23 T 44 N R 20 W
RouteCounty Highway 257
CountyPettis County
StateMissouri
Coordinates38.56331, -93.08631
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 protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.6 US tons
Inventory rating37.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length41 ft (12.5 m)
Longest span20 ft (6.1 m)
Deck width14 ft (4.2 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic43 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bunker Hill RD over Trib of Lake CR built?

It was built in 1920, making it 105 years old in 2025.

What condition is Bunker Hill RD over Trib of Lake 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 February 2024.

How much traffic does Bunker Hill RD over Trib of Lake CR carry?

About 25 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Bunker Hill RD over Trib of Lake CR?

The structure is 41 ft (12.5 m) long with a longest span of 20 ft (6.1 m) and a deck 14 ft wide.

Who owns Bunker Hill RD over Trib of Lake CR?

It is owned by the County Highway Agency.