US Bridges

Mary Grubbs HWY over Unnamed Stream

Good

Boone County, Kentucky · 0.35 MI E of JCT US 25 · Structure no. 008C00081N

Built
2019
6 years old
Condition
Good
inspected September 2022
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
100
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mary Grubbs HWY over Unnamed Stream is a concrete culvert carrying Mary Grubbs HWY over Unnamed Stream in Boone County, Kentucky. It was built in 2019, so it is 6 years old, younger than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, projected to reach 122 by 2040. The structure is 22 ft (6.7 m) long.

Location

Open in Google Maps
CarriesMary Grubbs HWY
CrossesUnnamed Stream
Location0.35 MI E of JCT US 25
RouteCity Street 3094
CountyBoone County
StateKentucky
Coordinates38.86167, -84.60389
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating50.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadGreater than HL 93
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic122 by 2040
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Mary Grubbs HWY over Unnamed Stream built?

It was built in 2019, making it 6 years old in 2025.

What condition is Mary Grubbs HWY over Unnamed Stream 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 September 2022.

How much traffic does Mary Grubbs HWY over Unnamed Stream carry?

About 100 vehicles per day (2020 count).

How long is Mary Grubbs HWY over Unnamed Stream?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m).

Who owns Mary Grubbs HWY over Unnamed Stream?

It is owned by the City or Municipal Highway Agency.