US Bridges

Austin Road over Saline River

Good

Washtenaw County, Michigan · Saline Twp Sec 4 · Structure no. 000000000010966

Built
2015
10 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
3,335
2014 count
Owner
County
County Highway Agency

About this bridge

Austin Road over Saline River is a prestressed concrete box beam or girders - single or spread carrying Austin Road over Saline River in Washtenaw County, Michigan. It was built in 2015, so it is 10 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 3,335 vehicles a day, roughly 10% of them trucks, projected to reach 4,320 by 2040. The structure is 50 ft (15.2 m) long and 40 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesAustin Road
CrossesSaline River
LocationSaline Twp Sec 4
RouteCounty Highway 8122
CountyWashtenaw County
StateMichigan
Coordinates42.161, -83.84435
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating92.8 US tons
Inventory rating61.4 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length50 ft (15.2 m)
Longest span48 ft (14.5 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,335 (2014)
Projected traffic4,320 by 2040
Trucks10%
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 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 Austin Road over Saline River built?

It was built in 2015, making it 10 years old in 2025.

What condition is Austin Road over Saline 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 September 2023.

How much traffic does Austin Road over Saline River carry?

About 3,335 vehicles per day (2014 count), of which roughly 10% are trucks.

How long is Austin Road over Saline River?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.5 m) and a deck 40 ft wide.

Who owns Austin Road over Saline River?

It is owned by the County Highway Agency.