US Bridges

FM 185 over N Bosque River

Fair

McLennan County, Texas · 1.6 MI NE of SH 6 · Structure no. 091610196902009

Built
1964
61 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
2,795 ft
43 main spans
Daily traffic
10,271
2020 count
Owner
State
State Highway Agency

About this bridge

FM 185 over N Bosque River is a prestressed concrete stringer/multi-beam or girder carrying FM 185 over N Bosque River in McLennan County, Texas. It was built in 1964, so it is 61 years old, older than the Texas average of 44.4 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 10,271 vehicles a day, roughly 6% of them trucks, projected to reach 12,140 by 2037. The structure is 2,795 ft (851.9 m) long and 33 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesFM 185
CrossesN Bosque River
Location1.6 MI NE of SH 6
RouteState Highway 185
StateTexas
Coordinates31.60078, -97.29412
Functional classRural Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating31 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans43
Design loadH 20
Structure length2,795 ft (851.9 m)
Longest span65 ft (19.8 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,271 (2020)
Projected traffic12,140 by 2037
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$16 million
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 185 over N Bosque River built?

It was built in 1964, making it 61 years old in 2025.

What condition is FM 185 over N Bosque 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 FM 185 over N Bosque River carry?

About 10,271 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is FM 185 over N Bosque River?

The structure is 2,795 ft (851.9 m) long with a longest span of 65 ft (19.8 m) and a deck 33 ft wide.

Who owns FM 185 over N Bosque River?

It is owned by the State Highway Agency.