US Bridges

Whitmore Lake Road over Huron River

Good

Livingston County, Michigan · Sec 20 Green Oak Twp · Structure no. 000000000005842

Built
2006
19 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
75 ft
1 main span
Daily traffic
5,259
2013 count
Owner
County
County Highway Agency

About this bridge

Whitmore Lake Road over Huron River is a prestressed concrete stringer/multi-beam or girder carrying Whitmore Lake Road over Huron River in Livingston County, Michigan. It was built in 2006, so it is 19 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 5,259 vehicles a day, projected to reach 11,950 by 2020. The structure is 75 ft (22.9 m) long and 51 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesWhitmore Lake Road
CrossesHuron River
LocationSec 20 Green Oak Twp
RouteCounty Highway 0
CountyLivingston County
StateMichigan
Coordinates42.47134, -83.75644
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating49.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length75 ft (22.9 m)
Longest span73 ft (22.1 m)
Deck width51 ft (15.4 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,259 (2013)
Projected traffic11,950 by 2020
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Whitmore Lake Road over Huron River built?

It was built in 2006, making it 19 years old in 2025.

What condition is Whitmore Lake Road over Huron River 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 November 2024.

How much traffic does Whitmore Lake Road over Huron River carry?

About 5,259 vehicles per day (2013 count).

How long is Whitmore Lake Road over Huron River?

The structure is 75 ft (22.9 m) long with a longest span of 73 ft (22.1 m) and a deck 51 ft wide.

Who owns Whitmore Lake Road over Huron River?

It is owned by the County Highway Agency.