US Bridges

FM 1097 over Lk Conroe/W Fk Sn Jac Ri

Fair

Montgomery County, Texas · 6.00 MI W of IH 45 · Structure no. 121700125901011

Built
1972
53 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
6,480 ft
81 main spans
Daily traffic
9,618
2024 count
Owner
State
State Highway Agency

About this bridge

FM 1097 over Lk Conroe/W Fk Sn Jac Ri is a prestressed concrete stringer/multi-beam or girder carrying FM 1097 over Lk Conroe/W Fk Sn Jac Ri in Montgomery County, Texas. It was built in 1972, so it is 53 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 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 9,618 vehicles a day, roughly 7% of them trucks, projected to reach 13,938 by 2042. The structure is 6,480 ft (1,975.1 m) long and 42 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesFM 1097
CrossesLk Conroe/W Fk Sn Jac Ri
Location6.00 MI W of IH 45
RouteState Highway 1097
CountyMontgomery County
StateTexas
Coordinates30.43714, -95.59955
Functional classUrban Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans81
Design loadHS 20
Structure length6,480 ft (1,975.1 m)
Longest span80 ft (24.4 m)
Deck width42 ft (12.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,618 (2024)
Projected traffic13,938 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 1097 over Lk Conroe/W Fk Sn Jac Ri built?

It was built in 1972, making it 53 years old in 2025.

What condition is FM 1097 over Lk Conroe/W Fk Sn Jac Ri 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 September 2024.

How much traffic does FM 1097 over Lk Conroe/W Fk Sn Jac Ri carry?

About 9,618 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is FM 1097 over Lk Conroe/W Fk Sn Jac Ri?

The structure is 6,480 ft (1,975.1 m) long with a longest span of 80 ft (24.4 m) and a deck 42 ft wide.

Who owns FM 1097 over Lk Conroe/W Fk Sn Jac Ri?

It is owned by the State Highway Agency.