US Bridges

TR 99 over Marrowbone Creek

Fair

Moultrie County, Illinois · 1.7 MI SE Bethany · Structure no. 070463100000000

Built
2003
22 years old
Condition
Fair
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
159 ft
3 main spans
Daily traffic
200
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 99 over Marrowbone Creek is a prestressed concrete box beam or girders - multiple carrying TR 99 over Marrowbone Creek in Moultrie County, Illinois. It was built in 2003, so it is 22 years old, younger than the Illinois average of 45.3 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 200 vehicles a day, roughly 3% of them trucks, projected to reach 210 by 2046. The structure is 159 ft (48.4 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTR 99
CrossesMarrowbone Creek
Location1.7 MI SE Bethany
RouteCounty Highway 0
CountyMoultrie County
StateIllinois
Coordinates39.62306, -88.72516
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length159 ft (48.4 m)
Longest span55 ft (16.8 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2020)
Projected traffic210 by 2046
Trucks3%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 TR 99 over Marrowbone Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is TR 99 over Marrowbone Creek 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 February 2025.

How much traffic does TR 99 over Marrowbone Creek carry?

About 200 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is TR 99 over Marrowbone Creek?

The structure is 159 ft (48.4 m) long with a longest span of 55 ft (16.8 m) and a deck 27 ft wide.

Who owns TR 99 over Marrowbone Creek?

It is owned by the Town or Township Highway Agency.