US Bridges

Keystone Road N over Glc RR

Good

Grand Traverse County, Michigan · 0.1 MI N of Hammond Road · Structure no. 000000000013603

Built
2009
16 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete
Length
69 ft
1 main span
Daily traffic
5,348
2019 count
Owner
County
County Highway Agency

About this bridge

Keystone Road N over Glc RR is a concrete culvert carrying Keystone Road N over Glc RR in Grand Traverse County, Michigan. It was built in 2009, so it is 16 years old, younger than the Michigan average of 48.3 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 5,348 vehicles a day, roughly 13% of them trucks, projected to reach 12,650 by 2028. The structure is 69 ft (21 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesKeystone Road N
CrossesGlc RR
Location0.1 MI N of Hammond Road
RouteCounty Highway 0
Coordinates44.71774, -85.61404
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length69 ft (21 m)
Longest span65 ft (19.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,348 (2019)
Projected traffic12,650 by 2028
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Keystone Road N over Glc RR built?

It was built in 2009, making it 16 years old in 2025.

What condition is Keystone Road N over Glc RR 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 2024.

How much traffic does Keystone Road N over Glc RR carry?

About 5,348 vehicles per day (2019 count), of which roughly 13% are trucks.

How long is Keystone Road N over Glc RR?

The structure is 69 ft (21 m) long with a longest span of 65 ft (19.8 m).

Who owns Keystone Road N over Glc RR?

It is owned by the County Highway Agency.