US Bridges

Merrick ST over S Branch Raisin River

Fair

Lenawee County, Michigan · In Adrian · Structure no. 000000000005719

Built
1926
99 years old, rebuilt 2001
Condition
Fair
inspected March 2023
Type
Arch - Thru
Concrete
Length
92 ft
1 main span
Daily traffic
1,380
2003 count
Owner
City
City or Municipal Highway Agency

About this bridge

Merrick ST over S Branch Raisin River is a concrete arch - thru carrying Merrick ST over S Branch Raisin River in Lenawee County, Michigan. It was built in 1926 and reconstructed in 2001, so it is 99 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 1,380 vehicles a day, roughly 5% of them trucks, projected to reach 1,587 by 2023. The structure is 92 ft (28 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMerrick ST
CrossesS Branch Raisin River
LocationIn Adrian
RouteCity Street 0
CountyLenawee County
StateMichigan
Coordinates41.89458, -84.04712
Functional classUrban 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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating34.6 US tons
Inventory rating20.7 US tons

Structure

Structure typeArch - Thru
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length92 ft (28 m)
Longest span66 ft (20 m)
Deck width33 ft (10 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,380 (2003)
Projected traffic1,587 by 2023
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Merrick ST over S Branch Raisin River built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 2001.

What condition is Merrick ST over S Branch Raisin 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 March 2023.

How much traffic does Merrick ST over S Branch Raisin River carry?

About 1,380 vehicles per day (2003 count), of which roughly 5% are trucks.

How long is Merrick ST over S Branch Raisin River?

The structure is 92 ft (28 m) long with a longest span of 66 ft (20 m) and a deck 33 ft wide.

Who owns Merrick ST over S Branch Raisin River?

It is owned by the City or Municipal Highway Agency.