US Bridges

Mt Morris Road over Brent Run

Poor

Genesee County, Michigan · Bet Jennings & Clio RD · Structure no. 000000000002730

Built
1929
96 years old
Condition
Poor
inspected November 2024
Type
Tee Beam
Concrete
Length
27 ft
1 main span
Daily traffic
6,864
2017 count
Owner
County
County Highway Agency

About this bridge

Mt Morris Road over Brent Run is a concrete tee beam carrying Mt Morris Road over Brent Run in Genesee County, Michigan. It was built in 1929, so it is 96 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,864 vehicles a day, roughly 5% of them trucks, projected to reach 12,397 by 2037. The structure is 27 ft (8.2 m) long and 38 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesMt Morris Road
CrossesBrent Run
LocationBet Jennings & Clio RD
RouteCounty Highway 2574
Coordinates43.11923, -83.75153
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating27.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length27 ft (8.2 m)
Longest span24 ft (7.3 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,864 (2017)
Projected traffic12,397 by 2037
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$157,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mt Morris Road over Brent Run built?

It was built in 1929, making it 96 years old in 2025.

What condition is Mt Morris Road over Brent Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does Mt Morris Road over Brent Run carry?

About 6,864 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Mt Morris Road over Brent Run?

The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m) and a deck 38 ft wide.

Who owns Mt Morris Road over Brent Run?

It is owned by the County Highway Agency.