US Bridges

Armstrong Road over North Br. Mill Creek Dn.

Good

Lapeer County, Michigan · Sec. 21-28 Goodland Twp. · Structure no. 000000000005422

Built
2003
22 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
30
2020 count
Owner
County
County Highway Agency

About this bridge

Armstrong Road over North Br. Mill Creek Dn. is a prestressed concrete box beam or girders - multiple carrying Armstrong Road over North Br. Mill Creek Dn. in Lapeer County, Michigan. It was built in 2003, so it is 22 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 30 vehicles a day, roughly 2% of them trucks, projected to reach 37 by 2040. The structure is 37 ft (11.4 m) long and 28 ft wide.

Location

Open in Google Maps
CarriesArmstrong Road
CrossesNorth Br. Mill Creek Dn.
LocationSec. 21-28 Goodland Twp.
RouteCounty Highway 0
CountyLapeer County
StateMichigan
Coordinates43.09491, -83.06737
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.3 US tons
Inventory rating51 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length37 ft (11.4 m)
Longest span30 ft (9.2 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2020)
Projected traffic37 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Armstrong Road over North Br. Mill Creek Dn. built?

It was built in 2003, making it 22 years old in 2025.

What condition is Armstrong Road over North Br. Mill Creek Dn. 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 July 2023.

How much traffic does Armstrong Road over North Br. Mill Creek Dn. carry?

About 30 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Armstrong Road over North Br. Mill Creek Dn.?

The structure is 37 ft (11.4 m) long with a longest span of 30 ft (9.2 m) and a deck 28 ft wide.

Who owns Armstrong Road over North Br. Mill Creek Dn.?

It is owned by the County Highway Agency.