US Bridges

North Territorial over Huron River

Fair

Washtenaw County, Michigan · Dexter Twp Section 13 · Structure no. 000000000010988

Built
1995
30 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
200 ft
3 main spans
Daily traffic
9,058
2009 count
Owner
County
County Highway Agency

About this bridge

North Territorial over Huron River is a prestressed concrete box beam or girders - multiple carrying North Territorial over Huron River in Washtenaw County, Michigan. It was built in 1995, so it is 30 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 9,058 vehicles a day, roughly 8% of them trucks, projected to reach 17,515 by 2029. The structure is 200 ft (61 m) long and 56 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNorth Territorial
CrossesHuron River
LocationDexter Twp Section 13
RouteCounty Highway 8184
Coordinates42.38708, -83.91086
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.3 US tons
Inventory rating53.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length200 ft (61 m)
Longest span67 ft (20.3 m)
Deck width56 ft (17.2 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,058 (2009)
Projected traffic17,515 by 2029
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was North Territorial over Huron River built?

It was built in 1995, making it 30 years old in 2025.

What condition is North Territorial over Huron River 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 2023.

How much traffic does North Territorial over Huron River carry?

About 9,058 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is North Territorial over Huron River?

The structure is 200 ft (61 m) long with a longest span of 67 ft (20.3 m) and a deck 56 ft wide.

Who owns North Territorial over Huron River?

It is owned by the County Highway Agency.