US Bridges

FM 185 over Tonk Creek

Good

McLennan County, Texas · 2.5 MI W of SH 317 · Structure no. 091610056704011

Built
2005
20 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
160 ft
1 main span
Daily traffic
722
2020 count
Owner
State
State Highway Agency

About this bridge

FM 185 over Tonk Creek is a prestressed concrete stringer/multi-beam or girder carrying FM 185 over Tonk Creek in McLennan County, Texas. It was built in 2005, so it is 20 years old, younger than the Texas average of 44.4 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 722 vehicles a day, roughly 12% of them trucks, projected to reach 1,400 by 2037. The structure is 160 ft (48.8 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFM 185
CrossesTonk Creek
Location2.5 MI W of SH 317
RouteState Highway 185
CountyMcLennan County
StateTexas
Coordinates31.51716, -97.4785
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span70 ft (21.3 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic722 (2020)
Projected traffic1,400 by 2037
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 185 over Tonk Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is FM 185 over Tonk Creek 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 January 2023.

How much traffic does FM 185 over Tonk Creek carry?

About 722 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is FM 185 over Tonk Creek?

The structure is 160 ft (48.8 m) long with a longest span of 70 ft (21.3 m) and a deck 32 ft wide.

Who owns FM 185 over Tonk Creek?

It is owned by the State Highway Agency.