US Bridges

Hemlock Road over Whitmore Drain

Fair

Saginaw County, Michigan · 0.1 MI N of Frost Road · Structure no. 000000000009242

Built
1956
69 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
3,633
2010 count
Owner
County
County Highway Agency

About this bridge

Hemlock Road over Whitmore Drain is a steel stringer/multi-beam or girder carrying Hemlock Road over Whitmore Drain in Saginaw County, Michigan. It was built in 1956, so it is 69 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,633 vehicles a day, roughly 5% of them trucks, projected to reach 3,815 by 2020. The structure is 30 ft (9.1 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesHemlock Road
CrossesWhitmore Drain
Location0.1 MI N of Frost Road
RouteCounty Highway 7323
CountySaginaw County
StateMichigan
Coordinates43.45128, -84.23016
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.1 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width32 ft (9.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,633 (2010)
Projected traffic3,815 by 2020
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hemlock Road over Whitmore Drain built?

It was built in 1956, making it 69 years old in 2025.

What condition is Hemlock Road over Whitmore Drain in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does Hemlock Road over Whitmore Drain carry?

About 3,633 vehicles per day (2010 count), of which roughly 5% are trucks.

How long is Hemlock Road over Whitmore Drain?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 32 ft wide.

Who owns Hemlock Road over Whitmore Drain?

It is owned by the County Highway Agency.