US Bridges

Territorial Road over Smith Branch Drain

Fair

Hillsdale County, Michigan · 0.8 Mile W of US-127 · Structure no. 000000000003283

Built
1950
75 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
20 ft
1 main span
Daily traffic
951
2013 count
Owner
County
County Highway Agency

About this bridge

Territorial Road over Smith Branch Drain is a concrete slab carrying Territorial Road over Smith Branch Drain in Hillsdale County, Michigan. It was built in 1950, so it is 75 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 5 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 951 vehicles a day, projected to reach 1,560 by 2038. The structure is 20 ft (6.1 m) long and 45 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesTerritorial Road
CrossesSmith Branch Drain
Location0.8 Mile W of US-127
RouteCounty Highway 3002
CountyHillsdale County
StateMichigan
Coordinates41.70968, -84.37601
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length20 ft (6.1 m)
Longest span17 ft (5.1 m)
Deck width45 ft (13.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic951 (2013)
Projected traffic1,560 by 2038
Trucks0%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$15,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Territorial Road over Smith Branch Drain built?

It was built in 1950, making it 75 years old in 2025.

What condition is Territorial Road over Smith Branch 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 November 2024.

How much traffic does Territorial Road over Smith Branch Drain carry?

About 951 vehicles per day (2013 count).

How long is Territorial Road over Smith Branch Drain?

The structure is 20 ft (6.1 m) long with a longest span of 17 ft (5.1 m) and a deck 45 ft wide.

Who owns Territorial Road over Smith Branch Drain?

It is owned by the County Highway Agency.