US Bridges

Letts Road over Sturgeon Creek

Fair

Midland County, Michigan · 0.2 MI E of Perrine Road · Structure no. 000000000006997

Built
1983
42 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
75 ft
2 main spans
Daily traffic
146
1999 count
Owner
City
City or Municipal Highway Agency

About this bridge

Letts Road over Sturgeon Creek is a prestressed concrete stringer/multi-beam or girder carrying Letts Road over Sturgeon Creek in Midland County, Michigan. It was built in 1983, so it is 42 years old, younger 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 146 vehicles a day, roughly 5% of them trucks, projected to reach 216 by 2019. The structure is 75 ft (22.8 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLetts Road
CrossesSturgeon Creek
Location0.2 MI E of Perrine Road
RouteCity Street 0
Coordinates43.66566, -84.2728
Functional classRural Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.7 US tons
Inventory rating34.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length75 ft (22.8 m)
Longest span37 ft (11.2 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic146 (1999)
Projected traffic216 by 2019
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
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 Letts Road over Sturgeon Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Letts Road over Sturgeon Creek 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 July 2024.

How much traffic does Letts Road over Sturgeon Creek carry?

About 146 vehicles per day (1999 count), of which roughly 5% are trucks.

How long is Letts Road over Sturgeon Creek?

The structure is 75 ft (22.8 m) long with a longest span of 37 ft (11.2 m) and a deck 33 ft wide.

Who owns Letts Road over Sturgeon Creek?

It is owned by the City or Municipal Highway Agency.