US Bridges

Bunker Hill RD over Mill CR

Good

Lincoln County, Missouri · S 6 T 50 N R 1 W · Structure no. 35937

Built
2018
7 years old
Condition
Good
inspected April 2024
Type
Tee Beam
Prestressed Concrete
Length
80 ft
1 main span
Daily traffic
250
2023 count
Owner
County
County Highway Agency

About this bridge

Bunker Hill RD over Mill CR is a prestressed concrete tee beam carrying Bunker Hill RD over Mill CR in Lincoln County, Missouri. It was built in 2018, so it is 7 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 250 vehicles a day, roughly 10% of them trucks, projected to reach 400 by 2043. The structure is 80 ft (24.4 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBunker Hill RD
CrossesMill CR
LocationS 6 T 50 N R 1 W
RouteCounty Highway 116
Coordinates39.12972, -91.04833
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.5 US tons
Inventory rating47.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span76 ft (23.1 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic400 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Mill CR built?

It was built in 2018, making it 7 years old in 2025.

What condition is Bunker Hill RD over Mill CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does Bunker Hill RD over Mill CR carry?

About 250 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Bunker Hill RD over Mill CR?

The structure is 80 ft (24.4 m) long with a longest span of 76 ft (23.1 m) and a deck 25 ft wide.

Who owns Bunker Hill RD over Mill CR?

It is owned by the County Highway Agency.